The Demarest Nature Center Association

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Click here to read our latest Winter 2025 newsletter!

 “We don’t stop hiking because we grow old,
we grow old because we stop hiking.

~Finis Mitchell

Keep an eye out for this magnificent tree
that is often overlooked but full of beauty and utility

~ Jeff Shaari

 “We don’t stop hiking because we grow old,
we grow old because we stop hiking.

~Finis Mitchell

Welcome To The Demarest Nature Center

The Demarest Nature Center is located in Demarest, NJ, USA, and is open to all persons, residents and non-residents alike, every day of the year. In addition to preserving and protecting important open space here in the midst of a large metropolitan area, the center seeks to educate young and old alike as to the beauty of nature and the importance of protecting our environment.

We, the trustees of the Demarest Nature Center Association, encourage you to use this site to find out more about the Demarest Nature Center and its programs. Click on the topic of your choice and find out more. The links will tell you about the Center, introduce you to our events and endeavors, and also take you to other nearby nature centers, as well as environmental organizations, National Parks, and suggestions for things to do. The site is constantly growing and being updated, so we hope you will come back again and again.

Nature News

What’s missing from the perfect child-friendly summer? Generous public spaces | Rhiannon Lucy Cosslett

Having a child makes you see cities differently. We deserve better than shuttered playgrounds and locked paddling poolsThere’s nothing like a boiling hot summer with an energetic small child to more

Young country diary: Staring into the big eyes of a brown hare | Issy

Kendal, Cumbria: They can freeze when they’re in danger – that’s what this one did, before racing off with its long, strong legsEach time I see a brown hare, I’m more

‘His sleeping bag was frozen solid’: the highs – and lows – of the Duke of Edinburgh’s award

As more young people sign up for the DofE than ever before, past recipients share tales of a stag, dead sheep and ‘biblical rain’Biblical rain, meagre food rations and – more

The ever-increasing demand for power in Texas—not only from data centers, but due to industrial electrification, manufacturing and population expansion—has outpaced anything the state’s electricity grid operator has seen or more

The Environmental Protection Agency and its administrator, Lee Zeldin, face a class-action lawsuit after canceling $3 billion in grant funding for climate and environmental programs in disadvantaged communities. The lawsuit, more

From our collaborating partner “Living on Earth,” public radio’s environmental news magazine, an interview by host and executive producer Steve Curwood with Richard Lazarus, the Charles Stebbins Fairchild Professor of more

‘Positive cascades could help accelerate change’: social tipping points expert on fixing climate crisis

The world has been too optimistic about the risk to humanity and planet – but devastation can still be avoided, says Timothy LentonTimothy Lenton is a professor of climate change more

Countries should keep their statehood if land disappears under sea, experts say

Long-awaited ILC report examines what should happen to vulnerable countries as sea levels riseStates should be able to continue politically even if their land disappears underwater, legal experts have said.The more

The Trump administration claims roads in forests prevent wildfires. Researchers disagree.

Experts say repealing the "Roadless Rule" won't help stop fires, but it will help loggers. more

The Chesapeake Bay Program declined to grant tribal nations full membership and voting rights in its governing body at a meeting Friday, its principal staff committee instead saying officials could more

Commuter traffic stops for whales on Australia’s humpback highway

PORT STEPHENS, Australia (AP) — Sydney’s harbor becomes a humpback highway in winter as the whales migrate from feeding grounds in Antarctica to breeding areas off Australia’s coast. Whale watchers more

From Pacific Island students to executives at global organizations like Greenpeace, a wide swath of people are losing patience with the slow and often uneven international process for reining in more

Thorny questions about who will pay for global climate action derailed a climate summit in Bonn, Germany, this week. more

After USAID cut, Ethiopia’s largest community conservation area aims for self-sufficiency

ADDIS ABABA — Local leaders at Ethiopia’s largest community conservation area are working to become financially self-sufficient and continue protecting land and wildlife independently, following the abrupt cut of funding more

Peter Seligmann steps down from Conservation International board after nearly four decades

Peter Seligmann, the founder of Conservation International (CI) and longtime Chair of its Board of Directors, has stepped down from the Board effective June 22, 2025, the organization announced. He more

Google’s emissions up 51% as AI electricity demand derails efforts to go green

Increase influenced by datacentre growth, with estimated power required by 2026 equalling that of Japan’sGoogle’s carbon emissions have soared by 51% since 2019 as artificial intelligence hampers the tech company’s more

Friendship benefits male and female mountain gorillas differently, study shows

Titus was just 4 years old when poachers killed his father and several other close adults in his group. Despite the violence, the young mountain gorilla developed an approach to more

Calls for ‘urgent’ investigation into lobbying activities of fracking advocate and gas company

Lidia Thorpe, David Pocock and the Greens demand action after Good Advice and Empire Energy allegedly offered private deals to traditional owners to smooth the way for gas salesHow an more

Bangladesh plans new reserve for trapped elephants

Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Bangladesh is preparing to add to its tally of 56 protected areas by more

Fire is both destruction and rebirth for Maya communities of Belize

PUNTA GORDA, Belize — Rosa Mis walks on a carpet of cracking dry leaves under the scorching sun of late May. Her green T-shirt blends in with the newly grown more

Inside a plan to use AI to amplify doubts about the dangers of pollutants

Risk analyst Tony Cox’s work has been backed by the chemical lobby, and some health experts are alarmedAn industry-backed researcher who has forged a career sowing doubt about the dangers more

The ‘silent killer’: what you need to know about heatwaves

How spells of hot weather put us in danger and what measures we can take to protect ourselvesHeatwaves have grown hotter and stronger as the planet has warmed, making what more

Suspend UK from oil oversight body over protests crackdown, say campaign groups

Groups question UK membership of Extractive Industries Transparency Initiative after actions of successive governmentsA coalition of civil society groups is calling for the UK government to be suspended from a more

Flash floods in Pakistan kill 8 and 58 are rescued after deluge swept away dozens

PESHAWAR, Pakistan (AP) — Flash floods triggered by pre-monsoon rains swept away dozens of tourists in northwest Pakistan on Friday, killing at least eight people. The nationwide death toll from more

‘It looks more likely with each day we burn fossil fuels’: polar scientist on Antarctic tipping points

Despite working on polar science for the British Antarctic Survey for 20 years, Louise Sime finds the magnitude of potential sea-level rise hard to comprehendFor more than 20 years, Louise more

From New York to Paris to Beijing, urban trees are enjoying an extra-long growing season, a new study finds.Read more on E360 → more

Vermont’s Climate Superfund Act became law last summer. New York followed its lead in December. Four days later, the Chamber of Commerce and the American Petroleum Institute sued Vermont for more

As the United Nations climate talks came to a faltering end Thursday in Bonn, Germany, the world’s least developed countries and island nations feared for their future while some rich, more

A year after Helene, river guides in Appalachia are navigating a new world

The first tourist season since the storm reveals how much the river and livelihoods have changed. more

WWF’s top leader acknowledges reforms in wake of abuse allegations

VILLARS, Switzerland — Six years after being shaken by allegations of human rights abuses linked to conservation enforcement, the World Wide Fund for Nature (WWF) says it has undertaken considerable more

An analysis of 500 watersheds found levels of organic carbon, phosphorus, and other pollutants up to 103 times higher after a wildfire. more

What happens to artisanal fishers when a deep-sea fishing port comes to town?

This is Mongabay’s second story in a short series about the new Shimoni Fish Port. Read the first story here. SHIMONI, Kenya — On a drizzly March afternoon, more than more

A third of Pacific island nation applies for Australian climate change visa

More than 4,000 Tuvalu citizens have entered the ballot for a world-first climate visa to Australia. more

Week in wildlife: an orphaned sloth bear, swimming hippos and cheeky New Forest donkeys

The best of this week’s wildlife photographs from around the world Continue reading more

The green drought: June rainfall has come too late to offer relief to farmers in southern Australia

The winter crop growing season requires three days of steady rain – but many inland parts of southern Australia did not receive an autumn break this year How often do more

Nature, Published online: 27 June 2025; doi:10.1038/d41586-025-02009-8Results align with other efforts to count the number of people killed amid the ongoing conflict. more

Nature, Published online: 27 June 2025; doi:10.1038/d41586-025-02024-9Directives by the Trump administration are still being applied to grant materials despite court order. more

Nature, Published online: 27 June 2025; doi:10.1038/d41586-025-01958-4Nature talks to legal and other specialists about the cases and what to watch out for when transporting lab materials. more

Nature, Published online: 27 June 2025; doi:10.1038/d41586-025-02011-0Several groups hope to develop artificial-intelligence models that can predict how cells behave. more

Nature, Published online: 27 June 2025; doi:10.1038/d41586-025-02029-4Researcher used carbon dating to provide evidence that humans had arrived in Brazil much earlier than previously thought. more

CHICAGO—In a large, air-conditioned room in East Garfield Park on Monday afternoon, Dhruv Trivedi waited quietly to hear if a bed would be available for him at a local shelter more

Author Kim Stanley Robinson on climate fiction & navigating the climate crisis

Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Five years on from the publication of the climate fiction book, The Ministry for more

Sweden needs a rights of nature legal framework (commentary)

On July 1, 2025, the reassessment of Swedish hydropower plants will resume under the framework of its national plan – a necessary and long-delayed effort. Swedish rivers are heavily impacted more

As ocean acidification ramps up, experts call for speedy ocean protection

Ocean health is moving into a danger zone, with rampant human-caused carbon dioxide emissions having already pushed ocean acidification levels beyond safe limits in large swaths of the marine environment, more

Indigenous guards: The shield of Colombia’s Amazon

In early February, in downtown Bogotá, Colombia, Luis Alfredo Acosta recited a line in a book from memory: “I am from the rainforest because I smell like the rainforest; I more

Five years after a Pennsylvania grand jury made eight recommendations to protect public health and the environment from fracking, the state has largely failed to follow through, five environmental groups more

Regulation on oil palm expansion in Peru’s Amazon could endanger forests, say critics

Oil palm is a crop whose derivatives have multiple uses, resulting in staggering global demand. Because of this, Peru’s Ministry of Agrarian Development and Irrigation (MIDAGRI in Spanish) has developed more

Shoots of hope for Britain's cherished ash trees

Scientific evidence suggests ash trees are ‘fighting back’ against a deadly disease. more

Why is star anise disappearing from northeastern India?

ARUNACHAL PRADESH — India. Over 60% of star anise trees have vanished from the region in just 84 years, pushing this valuable spice toward endangerment and leaving the Indigenous Monpa more

Nicaragua government tied to illegal land invasions in wildlife refuge, documents suggest

A protected wildlife refuge in Nicaragua has suffered a wave of deforestation in recent years, fueled by controversial land deals allowing settlers to clear the rainforest for farming, mining and more

BBC Inside Science

The science behind US attacks on Iran’s nuclear sites. more

Colombian waste pickers inundate iconic Bogota square with plastic bottles to protest falling wages

BOGOTA, Colombia (AP) — Dozens of Colombian waste pickers inundated Bogota’s iconic Bolivar Square with about 15 tons of recyclable goods Tuesday to protest decreasing income and tougher conditions for more

Balancing wildlife and human needs at Uganda’s Queen Elizabeth park

To the outside world, Uganda’s Queen Elizabeth National Park is a model of successful conservation of wildlife amid declining populations in other parts of Africa. But while elephant, giraffe and more

As iconic wild leopard ages in Sri Lanka, debate about human intervention ensues

COLOMBO — Sri Lanka’s largest protected area, the Wilpattu National Park, recognized as one of the best places in the country to observe leopards in the wild, has long been more

Cacao agroforestry in Belize hits the sweet spot for people and nature

The Maya Golden Landscape in southern Belize is a patchwork of protected areas, agricultural lands and small communities, part of the greater Maya Forest, the second-largest tropical forest in the more

Ever since the first draft of the “One Big Beautiful Bill Act” appeared in the House, renewable energy trade groups have been trying to make sense of language intended to more

Chicago residents risk daily lead exposure from toxic pipes. Replacing them will take decades.

The city with the most lead service lines in the country doesn’t plan to finish replacing them until 2076. more

In Ecuador’s Amazon, Big Oil exploits Indigenous communities in the absence of the state

This story is published in partnership with the Ecuadorian independent media outlet GK. Sitting in a small gray motorboat, Rosa Aranda dips her fingers in the Villano River as she more

‘Forgotten’ leopards being driven to silent extinction by poaching and trade

Leopards — solitary, enigmatic, nocturnal predators with golden fur splashed with dark rosette spots — have the widest range of any big cat. They’re found in a variety of habitats more

Why many low-income households can’t afford this free home improvement program

Thousands of people “are falling through the cracks" because they can't make repairs to qualify for the Weatherization Assistance Program. more

A planned EV battery factory in Indonesia poses a grave threat to an uncontacted tribe, a watchdog group warns.Read more on E360 → more

The illegal trade in ivory and pangolin scales has fallen sharply since COVID-19. But for how long?

Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Between 2015 and 2024, global authorities seized 370 metric tons of pangolin scales more

Nigeria’s proposed ban on solar panel imports raises concerns

Nigeria recently proposed a ban on importing solar panels to boost local manufacturing, but some climate and renewable energy experts worry this move may impede the country’s transition to cleaner more

Shipping is one of the world’s dirtiest industries – could this invention finally clean up cargo fleets?

Freighters emit more greenhouse gases than jets, but a tech startup believes a simple and effective technique can help the industry change course An industrial park alongside the River Lea more

Work begins to create artificial human DNA from scratch

Scientists start a controversial project to create the building blocks of human life, in what is thought to be a world first. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-01938-8US biomedical agency’s public-access policy kicks in on 1 July. Nature talks to specialists about how to comply. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-01816-3Astronomer Willice Obonyo describes how scholarship programmes seeded a fresh crop of radioastronomers in Africa. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-02025-8Researchers have shown how Stone Age people might have canoed from Taiwan to Japan more than 30,000 years ago by doing it themselves. Plus, more

Nature, Published online: 26 June 2025; doi:10.1038/s41586-025-09282-7Addendum: Unravelling cysteine-deficiency-associated rapid weight loss more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-02017-8Research across science and medicine will probably shrink at one of the world’s most elite universities amid a new political reality. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-01986-0Study highlights potential for sustainable synthesis of paracetamol. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-02000-3Thimerosal is found in only a small fraction of US vaccine doses but has long been viewed with suspicion by the anti-vaccination community. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-02010-1Scientists debate age of ancient Canadian crust as Inuit leaders work to preserve the location. more

Nature, Published online: 26 June 2025; doi:10.1038/d41586-025-01993-1Kelp ‘loofahs’ might be first example of toolmaking by marine mammals. more

World's oldest boomerang doesn't actually come back

The 40,000-year-old boomerang was made with an astonishing level of skill and ingenuity, say scientists. more

Plastic bag bans linked to sharp decline in coastal litter, study finds

A new study finds that regional plastic bag bans in the U.S. significantly reduce coastal plastic bag litter compared with areas without such policies. Single-use plastic bags are one of more

Vanishing giants: The Indian Ocean’s biggest fish need saving (commentary)

I have spent much of my life studying predatory fishes in East Africa’s coastal waters, but never have I been more concerned about their future. The disappearance of the western more

Organized crime & gold trade are increasingly connected, report shows

Latin American cartels once were masters of the drug trade, but spikes in prices led them into controlling a new venture. more

Bitcoin boom comes with huge intensifying environmental footprint

While much has been written about bitcoin, many people still find it a hard topic to comprehend, even as promoters like U.S. President Donald Trump rave about it being a more

Signs of hope for rescued gorillas rewilded in DRC, but security concerns linger

Isangi, Lulingu, Mapendo and Ndjingala: these are the names of four Grauer’s gorillas (Gorilla beringei graueri) that conservationists reintroduced to the wild in October 2024. After years in a sanctuary, more

Switzerland’s ebbing glaciers show a new, strange phenomenon: holes reminiscent of Swiss cheese

RHONE GLACIER, Switzerland (AP) — One of Switzerland’s glaciologists says his teams are noticing a strange phenomenon in the Alpine country’s glaciers. Holes are emerging inside — a bit like more

Orcas discovered making tools from seaweed to ‘massage’ each other

“We were amazed when we first noticed this behavior,” said Michael Weiss, research director at the Center for Whale Research in the U.S. state of Washington. What started as a more

Meatpacking giant JBS debuts on NYSE six months after $5m Trump donation

JBS, the world’s largest meatpacking company, began trading on the New York Stock Exchange on June 13, just six months after its U.S. subsidiary, Pilgrim’s Pride, made a $5 million more

How a 1.3-mile stretch of street became a much-needed park space in Queens, New York

“What started out as a necessity during the pandemic has really evolved into an incredible place that brings people together." more

Mirrors in space and underwater curtains: can technology buy us enough time to save the Arctic ice caps?

A conference in Cambridge this week will explore a raft of geoengineering ideas to cool the region down – and attempt to address the fears of those who argue the more

"A single word like 'X̱maay' contains generations of climate knowledge, laws, and cultural practices." more

River pollution suffocating the sea, campaigners say

New reports are set to show pollution from farming and sewage is affecting protected areas of the sea. more

India sends its first astronaut into space in 41 years

Group Captain Shubhanshu Shukla has become only the second Indian to travel to space. more

Something fishy: the best of Belfast photo festival – in pictures

From peat bogs containing centuries of history to the fascinating world of sea creatures’ senses, the theme for this year’s annual event is ‘Biosphere’ Continue reading more

Nairobi’s lions are almost encircled by the city. A Maasai community offers a key corridor out

Maasai pastoralists living by the national park in Kenya’s capital are helping wildlife with a crucial migratory route through their land – at great risk to their cherished cattleNairobi national more

More people buying electric cars and heat pumps than ever before

But the Climate Change Committee warns there's still a long way to go for the UK to reach net zero by 2050. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01941-zThe theft probably helps the cells to spread around the body, and preventing it could provide a path to treatment, researchers say. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01963-7Experiences of insight come with a burst of brain activity — and a memory boost. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01928-wSometimes research needs to leave academia in order to thrive. Three spin-off founders reveal key drivers of their success. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01745-1One analysis suggests that 90% of studies in the field involve data relating to humans. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01926-yThere are good commercial reasons for firms to share their research in science journals, but the practice seems to be falling out of favour. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01998-wTool aims to solve the mystery of non-coding sequences — but is still in its infancy. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01830-5Is US science facing a recession? Growing evidence points to a looming downturn. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09176-8A study reports the development of a method to trace intercellular transfer of mitochondria, and demonstrates that cancer cells that receive mitochondria from neurons more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01859-6The discovery of compounds that inhibit biosynthesis of the pheromone that triggers locust swarming suggests a fresh approach for controlling these pests. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09150-4Using the James Webb Space Telescope's Mid-Infrared Instrument, a study reports evidence for a direct detection of a cold, sub-Jupiter-mass planet in the disk more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01715-7The diverse chemical and physical properties of plastics make it hard to recycle mixtures. An innovative recycling method now tackles this issue. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09181-xA new asymmetric non-fullerene acceptor, P2EH-1V, is designed and synthesized for constructing devices demonstrating record-high efficiencies of 26.7% (certified at 26.4%) over an aperture more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09110-yIn locusts, the aggregation pheromone 4-vinylanisole is derived from dietary phenylalanine, and its production is dependent on two 4-vinylphenol methyltransferases that are potential targets more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01994-0Betaine, a compound that becomes more abundant in men who take up jogging, could confer some of the anti-ageing advantages of physical activity. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01965-5The output of computer-vision research is overwhelmingly aimed towards monitoring humans. The potential ethical implications need more scrutiny. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09157-xCMOS-based circuits can be integrated with silicon-based spin qubits and can be controlled at milli-kelvin temperatures, which can potentially help scale up these systems. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01982-4Marine creatures house contraband structures in special organelles, which the animal raids for food in times of need. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-08972-6An analysis of research papers and citing patents indicates the extensive ties between computer-vision research and surveillance. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-08950-yThis Review examines recently gained insights into the roles of ESCRT complexes in viral infection, immunity, cancer and neurological disease. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09143-3The coherent bunching of anyons and their dissociation was observed in an interference experiment. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09191-9Using viral barcode tracing to detect interactions between glioblastoma cells and non-malignant astrocytes in patient samples, investigators discovered a pathway that reduces tumour-specific immunity more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09147-zA general two-step intercalation and cation-exchange strategy is used to produce a library of highly ordered magnetic intercalation superlattices with tunable chemical modulations and more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09153-1A cost-effective all-in-one halide cathode material with high energy density and exceptional cycling stability can be used to achieve energy-dense, durable cathodes for the more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01454-9Technologies that can interpret imagery have many potential applications. An innovative study of papers and patents in the field suggests one use case that more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01991-3Modern re-run shows that Arthur Ruhlig’s conclusions, which probably influenced early thinking about fusion energy, were correct, but his numbers were off. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09088-7A product-oriented strategy that leverages the reactivities of different functional groups in real-life plastic mixtures can be used to obtain valuable products, opening a more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01925-zIf companies do step in to support research, will they publish the results, or keep them close to their chest? more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09138-0A dysprosium amide–alkene complex shows soft magnetic hysteresis loops up to 100 kelvin, arising from the high charge density of the amide ligands and the more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-02008-9Experiment shows how people in dugout canoes could have crossed the treacherous straits between Taiwan and the Ryukyu Islands. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01936-wThe majority of papers and patents in a subfield of AI enable surveillance, according to a new study. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09197-3A high-sensitivity, broadband, transient, full-Stokes spectroscopy setup is demonstrated, which can detect quickly varying small signals from chiral emitters. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09210-9Certain antimetabolites used to treat cancer are more neurotoxic than others, and it is now shown that this is due to their greater tendency more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01713-9Experiments in which systems of interacting electrons are split apart reveal the signatures of a liquid-like state — even for as few as three more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09202-9Disruption of dendritic cell (DC) interstitial motility in the tumour microenvironment promotes immune evasion, and enhancement of DC interstitial motility offers a route for more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01964-6Phonons are quasiparticles that carry heat, and in electronic chips they can get blocked at interfaces between materials, leading to overheating. An electron-microscopy technique more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01839-wWhen researchers cede their scientific judgement to machines, we lose something important. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01974-4Food for thought. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01927-xA combination of government planning, academic ambition and bold entrepreneurship are hallmarks of the country’s success. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09172-yExperiments in fission yeast show that cyclin-dependent kinase is first activated in the nucleus, from which the mitotic signal is propagated from CDK at more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01896-1Male mice that make high levels of fibroblast growth factor 21 stay lean as they age — a finding that could translate to humans. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09170-0An approach that learns models of robots from video capture can predict the 3D motion outcomes of motor commands, enabling accurate control of a more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01967-3As was realized after the Second World War, peace and prosperity stem from partnership and sustained investment in human development. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09139-zThe emergence of universal collective behaviour is demonstrated through collisions of electron droplets containing up to five particles, which exhibit strong all-body correlations characteristic more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-02004-zAnalysis suggests that 90% of computer vision studies involve imaging humans — plus, the first images from the Vera C. Rubin Observatory. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01712-wIn yeast, the CDK and cyclin proteins that drive cell division activate first in the nucleus — a different location in the cell from more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01930-2A description of the terminology and methodology used in this supplement, and a guide to the functionality that is available free online at natureindex.com. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09165-xAn RNA codon-expansion strategy enables incorporation of non-canonical amino acids into proteins of interest orthogonally to existing methods by inserting pseudouridine codons into specific more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-02005-yScientists warn against reading too much into a small experiment generating a lot of buzz. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09208-3A study presents a strategy based on human pluripotent stem cells for treating neurodegenerative disorders of the gastrointestinal tract. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09080-1The Nature Relationship Index offers a new way to measure and engage human aspirations to shape a better future for people and all life more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09199-1A population code for the dynamics of choice formation in the primate premotor cortex is revealed, with diverse single-neuron tuning to a shared decision more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-02012-zScientists are digging into the regions of the brain involved in lightbulb moments. Plus, the man o’ war is at least four species and more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01718-4Neurons often receive organelles called mitochondria from other cells. It emerges that neurons donate mitochondria that support cancer-cell spread. more

Nature, Published online: 25 June 2025; doi:10.1038/s41586-025-09200-xThe Tweety homologue TTYH2 is identified as the lipid transfer mediator for APOE-containing lipoproteins. more

Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01929-9Here’s where academic researchers are flocking to — and the topics they’re pursuing. more

Dog-sized dinosaur that ran around feet of giants discovered

The dinosaur was mislabelled and misunderstood - but scientists now realise how special it is. more

This burger was made from cow cells in a lab. Should it really be served in restaurants?

Lab-grown beef, chicken and even quail are served in restaurants in some countries around the world - and now some cultivated meats could soon be sold in the UK too more

This burger was made from cow cells in a lab. Should it really be served in restaurants?

Lab-grown beef, chicken and even quail are served in restaurants in some countries around the world - and now some cultivated meats could soon be sold in the UK too more

‘Extinction crisis’ could see 500 bird species vanish within a century – report

Researchers say urgent conservation efforts will be needed to mitigate the ‘shocking statistic’ that threatens to unravel ecosystemsMore than 500 bird species could vanish within the next century, researchers have more

Our Mission

Demarest Nature Center - Duffy Bridge

According to the 1972 articles of Incorporation, the purposes of the organization are:

  • To acquire or lease undeveloped lands and establish thereon educational building(s).
  • To develop natural history and conservation education programs in cooperation with schools, colleges, hospitals, youth groups and other organizations which will develop an understanding and appreciation of natural resources.
  • To cooperate with national, state, county, municipal and private natural resource agencies in providing an outdoor laboratory in which to demonstrate natural resource problems and management techniques.

 Check Out Our Latest Newsletter & History of DNC

Events

What We Sponsor

The DNC sponsors numerous programs to bring residents of Demarest and the surrounding areas into closer contact with wildlife and the natural world. Programs have varied, including lectures on native plants, family hikes, maple syrup making, bird watching & counts, birdhouse building, mushroom foraging walk, community trail walk and children’s scavenger hunts.  Local outdoor activities have been held at the Nature Center, Wakelee Field, various school grounds, and at the Duck Pond.

TripAdvisor

The Demarest Nature Center is on TripAdvisor! Feel free to share your experiences with us. We would appreciate your feedback.

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Mail

Demarest Nature Center
Box 41
Demarest, NJ 07627

Location

90 Park St, Demarest, NJ 07627

Trail Map

You can download a Trail Map here.

Become a Member

Since its incorporation in 1977 the Demarest Nature Center Association has cared for a 55-acre parcel of land bordered by Columbus Road on the west and County Road on the east. The Demarest Nature Center is open to all every day of the year. In addition to protecting woods, vernal ponds, meadows, and a section of the Tenakill Brook, as well as establishing and maintaining walking trails, the center provides educational events for everyone about the beauty of nature and the importance of preserving our amazing forest habitat. Your membership dollars go towards sponsorship of environmental education programs for kindergarten through the fourth grade in the Demarest schools, and a yearly scholarship given to a local high school senior who plans to pursue environment-related studies in college. Your membership also helps support our birdhouse/bird feeder building program, our annual photo contest, maple syrup making, environmental scholarships, monthly community trail walks and the Craft Show at Oktoberfest/Fall Festival Event.

The Demarest Nature Center Association is a 501(c)(3) not-for-profit corporation, run solely by volunteers and receives no funding from the Borough of Demarest.

Residents of Demarest receive all DNC mailings as postal patrons. Non-resident members receive DNC mailings by 1st class mail.

Come Join Us And Become a Member

Photo Gallery