These are the fee-free days for national parks, wildlife refuges, national forests and more protected wilderness areas for 2020.

Rescuers scrambled to save 90-million-year-old Wollemi pines from encroaching fire in Australia.

The Trump administration is changing how the government defines water, and new rules will have significant effects on wildlife and water quality.

Scientists watch closely and find evidence that sand dunes are coordinating their movements in ways we never knew before.

The areas were part of national monuments in Utah that were dramatically shrunk in 2017.

A new tyrannosaur species of dinosaur called Thanatotheristes degrootorum or 'Reaper of Death' in Greek was discovered in Alberta.

See how the machines are making work safer at one Georgia-Pacific plant in Crossett, Ark.

Underwater Photographer of the Year winners include a smiling dolphin and octopus with a soccer ball.

A major new review calls for urgent action to restore our ailing oceans.

The Florida Aquarium has discovered how ridged coral reproduce, which had previously been a mystery.

Australian diving tour companies are working with scientists to restore the coral reefs.

Botanists identify wild plants with sidewalk chalk to help draw attention to nature and discourage pesticide use.

Most vertebrates would need to evolve 10,000 times faster than their normal rates to survive climate change over the next century.

The new refuges aim to protect sea ice, wildlife and the economic stability of indigenous people.

The Endangered Species Act is popular with voters, so why are politicians changing it?

Two new studies map out the potential revival of Earth's lost forests.

As 'living fossils,' gingko trees hold ancient secrets that may help us prepare for the future, researchers say.

Humans have long admired the magic of spider silk, but thanks to science, we're finally unraveling some of its most valuable secrets.

Sea otters are dying from a parasite spread by outdoor cats, according to a new study.

In 'agrivoltaics,' crops and solar panels not only share land and sunlight, but also help each other function more efficiently.

A new study explores how social interactions affect our well-being.

Known as the 'crown jewel' of U.S. national forests, this ancient ecosystem is at a crossroads.

Wind turbines can kill birds and bats, but they don't have to. Here are a few ways to help them coexist.

The U.S. retreat from the Paris Agreement is bad news for the world, but it could be even worse for the U.S. itself.

The 'subtly stunning' songbird needs attention like this to save it from habitat loss, conservationists say.

Species from all over the animal kingdom face serious danger from noise pollution, researchers warn.

CO2 levels are now the highest they've been since long before modern humans existed.

The behavior has never been documented in other insects, researchers say.

This is the first time scientists have recorded the heart rate of a blue whale, the largest animal on Earth.

Rescuers are racing to save koalas as a barrage of bushfires roar across the country.

A program in Colorado's Delta County aims to ensure a brighter future for the next generation.

Unlike most candy canes, however, this one is 190 light-years long and made of ionized gas.

The black rhino calf appears healthy and is nursing regularly, according to zoo officials.

Researchers hope to help humans borrow some secrets of bear biology.

The 2020 Great Backyard Bird Count is a 4-day event when "citizen scientists" can enjoy nature while keeping tabs on local bird populations.

The move would weaken the century-old Migratory Bird Treaty Act.

The ancient holiday has become like a 'Jewish Arbor Day' in modern times, bringing religious and secular observers together for ecological reflection.

The towel-twirling German sauna tradition of aufguss is already a competitive sport in Europe, is now an emerging wellness trend in the U.S.

Alder Creek is home to hundreds of giant sequoias, from seedlings to millennia-old Methuselahs.

If your dinner conversation turns into a debate over global warming, here are a few tips for dealing with a climate denier.

Local communities played a key role in the creation of Bamyan Plateau Protected Area, a large new national park in Afghanistan.

Penguins are getting a chance to explore facilities that are closed to human visitors due to COVID-19.

Virtual tours of national parks are providing a valuable service as people shelter at home from the coronavirus pandemic.

In honor of Earth Day, MNN takes an animated look back at several decades of U.S. environmentalism in this video.

Bats don't pose an unusual risk among mammals, research suggests, and bat viruses we do get often rely far more on us than bats.

Circus animal gets away from handlers, causes a stir during rush hour.

'All the convenience of using your iPad to read the news online, but without the Internet's annoying habit of being completely free,' says host of 'Colbert Repo

Chuck Leavell and his famous friends Mike Mills, John Bell and Paul Riddle play a rollicking set at the White House Correspondents' Jam.

Drone footage captures rare Bryde’s whale mother and baby feeding. There are only about 200 of the creatures known to swim in those waters.

A couple of dogs snuffling through the backyard brush find a really big surprise: A bear!