Posted: 05/12/2013 - Scientists are on a mission to track the carbon footprints of large cities that are increasingly responsible for human-caused global warming.

Posted: 05/11/2013 - Spacewalking astronauts have replaced an ammonia pump outside the International Space Station in hopes of plugging a serious leak.

Posted: 05/10/2013 - The last time carbon dioxide levels were this high was about 2 million years ago.

Posted: 05/10/2013 - Two astronauts will do a spacewalk Saturday to try to fix an ammonia leak in the power system at the International Space Station.

Posted: 05/07/2013 - An Intel employee in New Mexico says in a federal lawsuit that co-workers secretly taped a "Kick Me" sign on his back as part of a pattern of abuse at a Rio Rancho plant.

Posted: 05/06/2013 - With friends and family in Pullman for her graduation from Washington State University, Cassie Dotts thought it would be a good time for another ceremony - her wedding.

Posted: 05/04/2013 - The creators of Solar Impulse - considered the world's most-advanced sun-powered plane - say their cross-country journey will mark a milestone in aviation history.

Posted: 05/04/2013 - An 89-year-old San Diego woman has earned a degree from Grand Canyon University in Phoenix.

Posted: 05/04/2013 - Police have arrested a man who allegedly broke through the front window of a Fresno home and bit off the homeowner's finger.

Posted: 04/30/2013 - Do you enjoy the outdoors and have strong vocal cords? If so, Norway might have a summer job for you: three weeks in the Arctic wilderness spotting polar bears.