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Young activists hold up signs at the Global Climate Strike in NYC on Sept. 20.

To Save the Planet From Climate Change, Students Take to the Streets

By Mindy Weisberger

Students around the world were on the march, calling on global leaders to take meaningful action to curb human activity driving catastrophic climate change.

cutaway of the earth

Underground Continents May Be As Old As Earth

By Nicoletta Lanese

New analyses of volcanic rocks fill gaps in Earth's ancient history.

A postman walks through streets flooded by the tropical storm Imelda, as he delivers mail in Galveston, Texas.

Texas Is Drowning Under One of the Wettest Storms in US History

By Mindy Weisberger

Tropical storm Imelda is bringing historic and devastating flooding to southeastern Texas, just two years after Hurricane Harvey flooded the same part of the state.

A group of students carry signs protesting climate change inaction.

Students Worldwide Mobilize for Climate Action

By Mindy Weisberger

Students around the world are walking out of schools on Friday (Sept. 20) in a global strike for climate action.

Vescovo (left) recently completed the Five Deeps Expedition with his latest dive into the deepest part of the Arctic Ocean.

Explorer Says He Reached the Deepest Part of the Ocean. James Cameron Disagrees.

By Yasemin Saplakoglu

In April, explorer Victor Vescovo claimed to have broken the record for deepest solo dive ever. But did he?

A purple sunrise above Lake Isabelle, Indian Peaks Wilderness, Colorado.

Remote Russian Volcano Turns the Skies Purple

By Stephanie Pappas

The eruption of a remote Russian volcano in June has been tingeing sunrises and sunsets the world over a gorgeous purple hue.

Greater Adria as it existed 140 million years ago, before sliding beneath what is now southern europe. The darker green areas depict the land above the water and the lighter green, the land below.

There's a Lost Continent Hiding Beneath Europe

By Yasemin Saplakoglu

The lost continent "Greater Adria" existed hundreds of millions of years ago after it broke off from Gondwana.

hurricane dorian damage in Bahamas.

The Bigger Reason Trump's Fight with a Weather Forecast Worries Meteorologists

By Rafi Letzter

The situation has some meteorologists concerned.

On Aug. 24, explorer Victor Vescovo dove to the deepest part of the Arctic Ocean.

Explorer Becomes the First to Reach Deepest Point in All 5 Oceans

By Yasemin Saplakoglu

Victor Vescovo recently completed a dive to the deepest part of the Arctic Ocean.

NOAA’s GOES East satellite captured this view of the strong Category 1 storm at 8:20 a.m. EDT, just 15 minutes before the center of Hurricane Dorian moved across the barrier islands of Cape Hatteras.

Hurricane Dorian Makes Landfall on Cape Hatteras, Takes Aim at Canada

By Tia Ghose, Rafi Letzter

Still a dangerous storm, Dorian plowed over North Carolina's Cape Hatteras this morning.

Hurricane Dorian, seen in this satellite view on Sept. 3, 2019, along with two other brewing storms.

Hurricane Dorian Intensifies Again, Headed Toward Carolinas

By Jeanna Bryner

Hurricane Dorian has strengthened to a Category 3 storm, with sustained winds reaching 115 mph (185 km/h), and it's barreling up the U.S. East Coast.

NASA astronaut Christina Koch shared this view of Hurricane Dorian from the International Space Station on Sept. 2, 2019.

Hurricane Dorian Barrels Up the Coast, Threatening the Carolinas

By Yasemin Saplakoglu

Hurricane Dorian, after devastating the Bahamas over the weekend, while sparing Florida a direct hit, is now inching up the East Coast of the U.S., threatening the Carolinas.

hurricane dorian damage

Photos: Hurricane Dorian Leaves Devastation in Its Wake

By Jeanna Bryner

Here's a look at the damage wreaked by the monstrous Hurricane Dorian.

An image from the National Oceanic and Atmospheric Administration (NOAA)'s GOES-West satellite shows three tropical storms near North America at 1:20 pm EST Sept 3, 2019. From left to right: Hurricane Juliette, a Category 3 storm, is not expected to impact land; Tropical Storm Fernand is expected to landfall in Mexico; Hurricane Dorian, now a Category 2 after its devastation of the northwest Bahamas, has grown in area and is making its way toward Florida.

Another Tropical Storm Could Hit Parts of Mexico and Texas This Week

By Rafi Letzter

A second, smaller tropical storm may make landfall in North America this week.

An artistic depiction shows a huge asteroid about to slam into Earth.

Asteroid That's Nearly the Height of the World's Tallest Building Is Flying by Earth Soon

By Laura Geggel

This asteroid nearly rivals the height of the world's tallest building.

NASA astronaut Christian Koch snapped this image of Hurricane Dorian from the International Space Station on Sept. 2, 2019. The station orbits more than 200 miles (320 kilometers) above the Earth.

Extremely Dangerous Hurricane Dorian Expected to Make Close Shave with Florida

By Jeanna Bryner

Hurricane Dorian is starting to make a turn toward the northwest and is expected to move dangerously close to the east coast of Florida later today (Sept. 3) and tomorrow.

a photo of the detonation of an atoll during operation ivy in 1952, showing a mushroom cloud above the sea

Anthropocene? Humans Have Been Changing the Planet for Millennia.

By Ben Marwick, Erle C. Ellis, Lucas Stephens, Nicole Boivin

So how do we mark the beginning of this human age?

the icebreaker rv polarstern on the ice at night

A Massive Icebreaker Ship Will Trap Itself in Arctic Sea Ice on Purpose. Here's Why.

By Tom Metcalfe

Here's why they're doing it.

Hurricane Dorian churns over the island of Grand Bahama, about 110 miles east of West Palm Beach, Florida, on Sept. 2, 2019.

Where Will Hurricane Dorian Make Landfall?

By Jeanna Bryner

Hurricane Dorian's track has been tricky to predict with certainty. Here's where it could make U.S. landfall.

Astronaut Luca Parmitano of the European Space Agency captured this photo of the Category 5 Hurricane Dorian from the International Space Station as the storm moved across the Atlantic Ocean toward the Bahamas.

Monster Storm Dorian Slows to a Crawl Over the Bahamas

By Tia Ghose

It's barely budged over the last several hours and is dumping huge amounts of rainfall on the island of Grand Bahama.