New ideas on dinosaur evolution

Basic facts that paleontologists thought they'd known for 130 years - about dinosaurs' family trees - might turn out to be wrong.

Rescuing 11 elephants from a mud hole

Asian elephants got stuck in a mud-filled old bomb crater in Cambodia. A collaborative rescue effort saved them all.

Red ring of light over Eastern Europe

The enormous ring of light that appeared in the night sky on April 2 - above a thunderstorm in the Czech Republic - was a rare and fleeting lightning phenomenon.

Use zip code to attract birds to your yard

Audubon website lets you enter your zip code to see a list of the best bird-friendly plants for your yard. Plus a free app to identify the birds you see.

2017 California desert superbloom

After 5 years of exceptional drought, California deserts have exploded with “superblooms” of wildflowers following the wet winter.

Favorite octopus videos

Octopuses (aka octopi or octopodes) are so cool! Here are 5 of our favorite videos featuring those remarkable cephalopods.

So long, last North American ice sheet

The last remnant of a once-enormous ice sheet will be gone in about 300 years, according to a new study. Scientists say warming temperatures are the reason.

Record low sea ice at both poles

Considering both poles in February 2017, Earth essentially lost the equivalent of a chunk of sea ice larger than Mexico, in contrast to the average global minimum for 1981-2010.

Great Barrier Reef is dying

Authors of a cover story in journal Nature this week called for immediate global action to reduce the magnitude of climate warming in order to secure a future for coral reefs.

Real-life Hoth is disappearing

Hardangerjøkulen, the Norwegian ice cap better known to Star Wars fans as the ice planet Hoth, is melting and may disappear by 2100.

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