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Human World

Image credit: NASA Earth Observatory
Blogs | Dec 20, 2014

Where does noon come only once a year, on the December solstice?

At the North and South Poles, sunrise comes at the spring equinox, noon at the summer solstice, sunset on the autumn equinox and midnight at the winter solstice.

Screen Shot 2014-12-17 at 4.10.58 PM
Science Wire | Dec 17, 2014

Video: 100 trillion microorganisms that live on and in you

There’s a unique collage of more than 100 trillion microorganisms living on and in you that are essential to your life and part of what makes you, well, you. It’s your microbiome.

Wilbur and Orville Wright.
This Date in Science | Dec 17, 2014

This date in science: Wright brothers’ first flight

Check out one of the world’s most famous early photos. It shows the Wright brothers and the first true airplane on December 17, 1903.

Still from Moonlight Skating by Göran Strand
Videos | Dec 11, 2014

Video: Moonlight skating in Sweden

“Nights like these are almost to good to be true.” See this touching, just-released video.

Blogs | Dec 11, 2014

Audubon’s Christmas Bird Count starts December 14

Audubon Society’s Christmas Bird Count starts December 14 and runs through January 5. It’s free and anyone can participate, but you have to sign up in advance. Here’s how.

Photo credit: Elizabeth Howell
This Date in Science | Dec 10, 2014

This date in science: Birthday of inventor of Dewey Decimal system

Happy birthday, Melvil Dewey!

Dallas, Dec. 9, 2014, via Mike Alvstad
Blogs | Videos | Dec 09, 2014

Incredible video of dense fog over Dallas

Video capture by a drone of dense fog with zero visibility on Tuesday, December 9, in Dallas, Texas. Amazing visuals!

ISS, as captured by Dave Walker
Blogs | Dec 09, 2014

How to spot the International Space Station

Every so often, the International Space Station (ISS) becomes visible in your night sky. Here’s how you can spot it.

Photo credit: Stephen Williams/Flickr
Blogs | Dec 08, 2014

Killing rats to save birds as glaciers recede

Glacier melt means rats can reach bird nests on South Georgia, an island north of Antarctica and east of the Falklands. What to do? Send in helicopters!

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Science Wire | Dec 05, 2014

Video: We are dead stars

Every atom in our bodies was processed in the body of an ancient star.