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Death Valley and its mountain shadow mystery
What's the origin of the mysterious green line in a photo, along the boundary of a mountain shadow that's racing across a Death Valley desert floor?
January 19, 2011
Global population is aging as we hit 7 billion
Population experts believe 2011 is the year that Earth will come to have 7 billion human inhabitants. As population grows in this century, experts expect a greater percentage of older people than ever before.
January 19, 2011
Orion Nebula in beautiful new image
Igor Chekalin of Russia selected the data used for this ethereal image of the Orion Nebula, as part of the Hidden Treasures 2010 competition of the European Southern Observatory.
January 19, 2011
The parrot Richard Henry has passed away
Richard Henry, one of a critically endangered species of parrot, has died at age 80. He's credited with helping to save his species from extinction. R.I.P. Richard Henry.
January 18, 2011
Watch Jeopardy pit humans vs. artificial intelligence
Watch this video to see a Jeopardy practice match with humans vs. IBM's Watson program.
January 18, 2011
Ancient Greek coin might recall Jupiter occultation
Professor Robert Weir believes an ancient Greek coin was minted to commemorate an event in which the moon blotted Jupiter from view temporarily.
January 18, 2011
Analysis of tweet-speak reveals regional dialects
What your 140-character tweet reveals about your geography, from scientists at Carnegie-Mellon. Plus how to tweet the word "cool" in both northern and southern California-eeze.
January 17, 2011
Science without soul: Warning from MLK Jr.
In accepting the Nobel Peace Prize in 1964, Dr. King said, "Our problem today is that we have allowed the internal to become lost in the external. We have allowed the means by which we live to outdistance the ends for which we live ... "
January 17, 2011
Cats – and other animals – in zero gravity
This vintage U.S. Air Force video shows cats floating in zero gravity. This video appears to be going viral today ...
January 17, 2011
Hot clues to future warming from Earth’s distant past
An analysis of ancient climate records suggests future global warming might be more severe than most scientists now suspect. Read more on future warming.
January 17, 2011
