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Arctic report card 2017
The report shows the warming trend that's transforming the Arctic region is persisting. The Arctic shows no sign of returning to reliably frozen region of recent past decades, say scientists.
December 12, 2017
Astronomers chart galaxy orbits in our Local Supercluster
"For the first time, we are not only visualizing the detailed structure of our Local Supercluster of galaxies, but we are also seeing how the structure developed over the history of the universe."
December 12, 2017
Exposed to wildfire smoke? 5 questions answered
The intense wildfires in southern California are triggering air quality alerts. What do health experts know about how inhaling smoke affects human health?
December 12, 2017
Darth Vader horseshoe crab
A 245-million-year-old fossil horseshoe crab, recently discovered in Idaho, has been named Vaderlimulus after Star Wars' Darth Vader. It's easy to see why.
December 12, 2017
Long-lasting moon halo
Halos around the sun or moon are caused by ice crystals, like those in high cirrus clouds. Sometimes you can't see clouds, but - in these photos - you can.
December 12, 2017
Shining sea and sky
"When phytoplankton come near the beach, you can see this amazing scene. There is light in the sea and sky," said Mohammad Rouhbakhsh of Iran, who captured this image.
December 11, 2017
10 tips for watching the Geminids
Tip: On December 14, 2017, the peak morning of the shower, the waning crescent moon will be sweeping past the bright planet Jupiter.
December 11, 2017
California in flames
According to the California Department of Forestry and Fire Protection, the 2017 California wildfire season is the worst on record.
December 9, 2017
Audubon’s Christmas Bird Count starts December 14
Audubon’s Christmas Bird Count is one of the longest-running citizen science projects in existence. Here's how to participate.
December 8, 2017
