Science

How cities face 'a window of opportunity' to confront climate change
On this week's Climate Cast, we look at a report from the Intergovernmental Panel on Climate Change about how some cities face "a window of opportunity" to confront the worst effects of climate change.
St. Paul Central students head to national robotics competition
Sixteen teams from Minnesota are joining thousands of high school students from around the world in St. Louis today for a national competition in robotics and technology.
Americans question Big Bang science
Few Americans question that smoking causes cancer. But they express bigger doubts as concepts that scientists consider to be truths get further from our own experiences and the present time, an Associated Press-GfK poll found.
Ancient landscape is found under 2 miles of ice in Greenland
A revelation goes against widely held ideas about how glaciers work, and it suggests that at least parts of Greenland's ice sheet survived periods of global warming intact.
First embryonic stem cells cloned from a man's skin
Scientists based their technique om the one used to create the sheep Dolly years ago. These cells might one day be useful in treating all sorts of diseases.
Our continuing look at climate change
The latest research on our changing climate.
Meet the Tyrannosaurus rex that was chased out of Montana
Most people don't know it, but the T. rex that's standing tall in the Natural History Museum in Washington, D.C., is a fake,and for decades the Smithsonian has coveted a real skeleton. Now, courtesy of the Museum of the Rockies in Bozeman, Mont., they've got one.
Photos: See the 'blood moon' eclipse
Sky gazers the world over are craning their necks in an effort to get a glimpse of the total eclipse of the moon -- the first visible from North America since 2010. This eclipse was a "blood moon," which looks the color of a desert sunset because of filtered light seeping around the Earth and reflecting off the moon's surface.