Science

The University of Minnesota says a bill to ban human cloning, which was introduced this week at the Legislature, is an attack on embryonic stem cell research.
Columnist David Brooks on 'The Social Animal'
New York Times columnist David Brooks has long been fascinated with the inner workings of the human mind. He joins us to discuss his new book, "The Social Animal," which explores the interactions of the conscious and subconscious and the role of each in shaping our lives.
A harsh lesson about nuclear power
Japan's crisis was entirely predictable, and something similar could happen here.
Photos: Bear research in northwestern Minnesota
Minnesota black bears are on the move in northwest Minnesota. Bears are expanding their range out of forested areas, into farmland. Researchers are trying to learn more about how and why these bears are adapting to a new habitat where bears traditionally did not live.
Mercury visible Sunday as NASA craft approaches
On St. Patrick's Day, for the first time, a small NASA spacecraft will enter into Mercury's orbit. And by coincidence, starting Sunday will be the best time all year for people on Earth to see Mercury with the naked eye.
Bottoms up Antarctic ice growth discovered
When it comes to ice, scientists are giving a whole new meaning to the phrase "bottoms up." Those massive ice sheets in Antarctica don't just grow on top when snow falls, they also grow from the bottom up, according to new research.
Apple's Jobs, on sick leave, appears at iPad event
Apple CEO Steve Jobs briefly emerged from his medical leave and walked on stage to standing ovation Wednesday to unveil the second-generation of the popular iPad.
Apple's iPad 2 is unveiled
Steven Jobs continues his indefinite medical leave, but there is no break from innovating at Apple. Apple executives unveil the iPad 2 today.
Space shuttle Discovery fueled for final flight
A space shuttle that has racked up an impressive list of firsts is about to add one more -- it will soon become the first in NASA's fleet to be retired.
Cosmic census finds crowd of planets in our galaxy
Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are astronomical: at least 50 billion planets in the Milky Way. At least 500 million of those planets are in the not-too-hot, not-too-cold zone where life could exist.