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Elephants reassure other elephants in distress
Elephants get distressed when they see others in distress, reaching out to calm them down.
February 19, 2014
Clouds circling a supermassive black hole
An international team of astronomers sight huge clouds of gas orbiting supermassive black holes at the centers of galaxies. Watch a video depicting the swirling clouds.
February 19, 2014
Image of polar vortex at its peak, January 2014
NASA image shows the polar vortex as it plunged into the United States, on its peak day of January 6, 2014.
February 19, 2014
Aurora borealis seen at low latitudes on February 18-19
Observers in the northern half of the United States and Canada captured it in photos.
February 19, 2014
Maui forest mist
The mist-filled forest at Maui's Polipoli State Park, by Chris Tinker.
February 19, 2014
Earth-orbiting satellites see Arctic surface darkening faster
The retreat of Arctic sea ice is diminishing Earth's albedo, or reflectivity, by an amount about twice as large as previously thought.
February 18, 2014
Warm U.S. West balanced cold U.S. East to create average January
Overall, the average temperature for January 2014 in the U.S. was 30.3 degrees, only one-tenth of a degree below normal for the month.
February 18, 2014
Fewer shark attacks in 2013, but more fatalities
Shark attacks worldwide in 2013 were the lowest since 2009, but fatalities were above average, a new study reports.
February 18, 2014
Interstellar magnetic fields warp as our sun and heliosphere move through galaxy
This illustration shows our heliosphere - the sphere of the sun's influence - moving through the space of our Milky Way galaxy.
February 18, 2014
Help name this polar bear cub
Help choose a name for this polar bear cub. Here are a few videos to help you decide.
February 18, 2014
