Scientists have discovered a fossilized shark head and many other fossils in Mammoth Cave National Park in Kentucky.

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

Over 30 years, Iran's Lake Urmia has shrunk by 80% due to drought and water overuse, but there's hope the lake is starting to rise again.

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

Balloons may be colorful and cheery, but they're lousy for wildlife.

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

A gorgeous 1,000-year-old cherry tree blooms in Japan without any adoring fans to see it.

On the 50th anniversary of Earth Day, the planet and a pandemic are showing us what's possible.

Flowers bounce back quickly from just about any kind of injury. Perhaps we can learn from them.

New Zealand's Green Party unveils a billion-dollar plan for an environmentally friendly economy in the aftermath of COVID-19.

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.

The relationship may be mutually beneficial, researchers say, thanks to linked root systems that can help a forest act as a superorganism.

Fewer than 10 vaquitas may be left on Earth, down from 100 in 2014 and 30 in 2017.

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

Despite recent declines in honeybees and other bee species, the U.S. is suspending its annual count of honeybee hives.

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

In case you're missing the forest for the trees, here are a few reminders why woodlands are wonderful.

The benefits of 'blue space' may be especially important for lower-income communities, researchers say.

A renowned biologist wants us to set aside half the planet for wildlife, part of a growing effort to avert the first man-made mass extinction.

The ocean is rising faster than it has in 3,000 years. Here's why you should care.

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.

A new study examines how early animals might have endured the worst ice age in Earth's history.

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 eruption killed 17 people and severely burned many survivors.

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

It's unclear exactly how many polar bears are left in the wild, but several populations likely face grave danger from climate change.

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

The locust plague already poses an 'unprecedented' threat to food security, and could still grow 500 times larger.

The debris left by Comet Thatcher isn't as spectacular as other meteor showers, but the moon will make viewing much easier this year.

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

Eco-friendly, last-minute gifts that won't bust your budget.

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.

The 2019 National Geographic Travel Photo Contest focuses on nature, cities and people. Here are the stunning winners.

The U.K.'s push to create new marine reserves in the Atlantic and Pacific oceans represents a victory for biodiversity campaigners. (And fish.)

Wine from Rioja Alavesa, the Basque subregion of Rioja, has been named a UNESCO Biosphere Responsible Tourism region.

Two viral videos demonstrate how to peel an entire head of garlic into cloves faster than you ever thought was possible.

Prepare to be a little freaked out and then rush to your refrigerator to try this method of eating an apple for yourself.

There's processed food and then there's ultra-processed food. One of them adds a lot more sugar to our diets than we realize.

Spotted lanternflies are hitching a ride on everything from camping gear to Christmas trees.

Rotisserie chickens are convenient, but there are reasons you may want to save them for emergency chicken needs only.

Not buying things can be difficult even when you're determined not to, so before you start, ask yourself the right questions.