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Polar bears’ biggest threat is ice loss
Hunting used to be the biggest threat to polar bear survival. Not anymore.
August 11, 2016
Humpback whales, heroes of the sea?
Humpback whales appear to rescue not just their own species, but also other whale species, seals and sea lions from attacks by killer whales.
August 9, 2016
Ice melt may release Cold War-era toxins
Formerly secret Camp Century in Greenland was abandoned beneath ice and snow. But the ice is melting, and biological, chemical and nuclear waste may be released as early as 2090.
August 7, 2016
First map of thawing under Greenland ice
Greenland's ice sheet insulates its own bottom layer, which is warmed from below by Earth's heat. Which bottom layers are now thawed, and which are still frozen?
August 7, 2016
Lifeform of the week: Sea stars
You call them starfish? They're brilliant by any name.
August 6, 2016
Parakeet takeover ahead?
"Parakeets are Britain’s fastest growing bird population and are on a trajectory to global domination."
August 4, 2016
California wildfire from space
For 11 days, the Soberanes fire has been burning near the California coast between Monterey and Big Sur. Here are some satellite views.
August 2, 2016
Gorgeous Dry Tortugas night skies
The National Park Service normally doesn't allow night photography at the Dry Tortugas, but made an exception for this project.
July 30, 2016
How much warning for supervolcanoes?
Yellowstone supervolcano could deposit ash across the U.S. Northwest, clogging rivers and streams and affecting agriculture. How much advance warning might we have?
July 28, 2016
Being called a bird brain is no insult
A new study has found that bird brains have significantly more neurons than do mammal - even primate - brains of the same mass.
July 27, 2016
