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From fins to legs to fins again
Marine tetrapods, a group of animals including whales, dolphins, seals, and sea turtles, have moved from sea to land and back to the sea over the last 350 million years
April 20, 2015
Ocean acidification drove Earth’s largest mass extinction
New evidence suggests that ocean acidification played a key role in the Permian–Triassic mass extinction event 252 million years ago that killed most life on Earth.
April 20, 2015
What is the smell of rain?
The word for it is "petrichor." It’s the name of an oil that’s released from Earth into the air before rain begins to fall.
April 18, 2015
What happens underground when a meteor hits
High-speed videos show what happens underground when an asteroid - or missile - strikes Earth.
April 17, 2015
Sperm whale meets deep-sea vehicle
Encounters between sperm whales and ROVs - remotely operated underwater vehicles - are rare. Watch this video, posted April 14.
April 15, 2015
Tornado track in northern Illinois
Satellite view makes clear how unlucky the 150 people of the town of Fairdale were on April 9.
April 15, 2015
Brontosaurus is back!
If you had to name a dinosaur, you might say Brontosaurus. But, since 1903, experts have said that Brontosaurus isn't a separate species. Now Bronto is back!
April 13, 2015
Auroras over US and similar latitudes
A geomagnetic storm sparked a display of auroras on the night of April 9-10. Auroras sighted as far south as Colorado! The storm may intensify later today.
April 10, 2015
Bacteria key to ice worm survival
Living in ice is no easy feat, but ice worms make it work. Part of the secret to their survival on glaciers lies in a symbiosis between worm and bacteria.
April 8, 2015
The python that’s eating Florida
Burmese pythons were imported to Florida as pets. Now tens of thousands of them are in the wild and they're eating ... everything. New York Times video.
April 7, 2015
