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Humpback whales appear to rescue not just their own species, but also other whale species, seals and sea lions from attacks by killer whales.
Circumzenithal arcs have been described as an “upside down rainbow” or “a grin in the sky.” They’re wonderful! See photos here.
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.
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?
You call them starfish? They’re brilliant by any name.
“Parakeets are Britain’s fastest growing bird population and are on a trajectory to global domination.”
For 11 days, the Soberanes fire has been burning near the California coast between Monterey and Big Sur. Here are some satellite views.
The National Park Service normally doesn’t allow night photography at the Dry Tortugas, but made an exception for this project.
Yellowstone supervolcano could deposit ash across the U.S. Northwest, clogging rivers and streams and affecting agriculture. How much advance warning might we have?
A new study has found that bird brains have significantly more neurons than do mammal – even primate – brains of the same mass.
2016’s great Mars and Saturn conjunction
Mars and Saturn over the Alps