The demise of megalodon coincided with the loss of a third of the largest marine animal species, scientists say.

The 50,000-year-old, perfectly preserved forest is showcased like never before in a newly released documentary.

A Sitka spruce on Campbell Island may be the 'golden spike' that denotes the controversial beginning of the Anthropocene epoch.

Hard-working 'apple detectives' in Washington and Idaho rediscovered 5 types of apples thought to be extinct.

New genetic evidence shows that Solenodons survived the asteroid impact that wiped out the dinosaurs.

Preserved human footprints in the White Sands National Monument give us insights into early humans' hunting practices of giant ground sloths.

A new, highly speculative conjecture about the extinction of ancient humans is sure to raise critics' brows.

Based on our mostly destructive history of interacting with isolated cultures, we should stay away.

These volcanic seamounts are rich with life and are estimated to be at least 30 million years old, formed when Australia and Antarctica broke apart.

The first animal to evolve on Earth was probably a sponge that existed around 640 million years ago.

Researchers uncover the remnants of lost continents hidden under the ice sheets of Antarctica.

Located under the Hiawatha Glacier, the impact crater is one of the largest on Earth.

A whole new kingdom will need to be created to classify Hemimastix kukwesjijk, the organisms found in a random dirt sample.

Elasmotherium sibiricum, the so-called 'Siberian unicorn,' is not as closely related to modern rhinos as once thought.

In A.D. 536, a volcanic eruption sent a thick haze into the air that blocked the sun over Europe, the Middle East and some of Asia for 18 months.

If dinosaurs had telescopes and had pointed them at Saturn, they might have seen a ringless world.

Anjouan is an island between Africa and Madagascar littered with sedimentary rocks called quartzite that don't belong there. Are they a chunk of Gondwana?

New research suggests it will take millions of years for extinct species to return to Earth.

Scientists say Zealandia meets all the requirements to qualify as a continent, even though 94% of it is underwater.

The space agency's $650 million Neo Surveillance Mission is designed to spot killer asteroids.

NASA astronauts make history with an all-female spacewalk — now that the spacesuit problem is resolved.

From nearsightedness to bone mass, a trip to the International Space System has a notable effect on astronauts' bodies.

Arctic sea ice, the white cap that covers the watery northern edge of the planet, has melted back to a record low level.

Toyota has donated 4,500 free trees for this March's giveaway for New York City residents.

This much CO2 hasn't filled the planet's atmosphere since the Pliocene Epoch 3 million years ago — long before modern humans existed.

This surprising discovery won't be enough to stop climate change, but it will help, researchers say.

The worldwide ban on ozone-depleting chemicals stopped Arctic ozone from disappearing and forming an "ozone hole" similar in size to Antarctica's.

The risk of 'severe, pervasive and irreversible impacts' is quickly rising worldwide, the draft report warns.

Scientists with NASA unveiled the first carbon maps obtained by the spacecraft, named the Orbiting Carbon Observatory-2, or OCO-2.

Even though Earth is already in an ice age, a surplus of ice is the least of our worries.

The latest World Meteorological Organization Greenhouse Gas Bulletin paints a grim picture for our environment.

Newly declassified photos show a shocking loss of ice in the Arctic as global temperatures continue to rise.

Four years in the making, the Discovery Channel/BBC co-production is a groundbreaking look at the Earth's polar regions.

Long-term thinning of Arctic sea ice combined with an intense, windy storm over the Arctic in early August contributed to a new record low for sea-ice extent, s

In continued efforts to track changes in glacial and sea ice, NASA's IceBridge plane has begun collecting data in Greenland.

A new visualization from NASA offers a unique view of life on Earth.

Cadbury will certify 300 million of its Cadbury Dairy Milk chocolate bars as well as its packaged cocoa, at a cost of £1.5m ($2.1m), by the end of summer.

The narrowest building in Poland is the work of Israeli writer Edgar Keret.

We've found several camping areas on lakes, rivers and the ocean that offer beautiful views and plenty of recreational opportunities.

Could we be witnessing Korean pop's plunge into the cultural criticism arena?

It's time to cultivate a true appreciation for what we have.

Organize your home and office with help from Gail Blanke's book about clearing the clutter.

These athletes got to the top of their sports without meat.

Anas Cheema, a 22-year-old economics student at the University of Victoria, decided to dedicate his summer.

Research conducted in Madison, Wisconsin, finds soil in developed residential landscapes is better at absorbing CO2 than forests.

The whole point of getting out into the natural world is to see, smell and hear the sounds of nature.

500 square miles of Appalachian forest is gone forever due to illegal mountaintop mining, and the EPA doesn't seem to mind.

A new YouTube integrated map lets Appalachian communities speak out on mountaintop coal mining.

Rainforest Action Network decides enough is enough with Obama's broken promises on mountaintop mining and stages dramatic protest in front of the EPA.

Do they really blast the tops off of mountains to get at cheaper coal? Do they really kill whales and dolphins and call it "research". Sarah Palin on the Discov