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Do embryonic stem cells hold the key to regenerative medicine that will cure diseases? Are there other kinds of stem cells that can do the same but without the controversial use of embryos? Scientists

Citing cases from Gandhi and Martin Luther King Jr. to Abraham Lincoln and John F. Kennedy, psychiatrist Nassir Ghaemi argues in a new book that the struggles that accompany some mental illness — particularly mania and depression — make for better leaders in times of crisis.

Ripped from the not-so-heartening headlines, serious hardcovers about war, recession and natural disaster can certainly kill the mood. In honor of Valentine's Day, Pat Dunnigan offers three alternatives for nighttime reading that will lift your spirits — and raise your pulse.

When climate scientists talked recently about their latest research on global warming, they also responded to questions about the politics surrounding climate change.

Highly radioactive water has nearly filled underground tunnels, raising fears it may reach the sea.

It started as a banner year for female candidates. More ran in party primaries than ever before, especially Republicans. Some posted big victories Tuesday. But for the first time since the 1970s, the total number of women in the new Congress will likely drop.

Is homework beneficial for very young children?

Libraries have limited space and limited funds, but they face a constantly growing supply of books. The careful culling of books is painstaking work. From selling to donating to destroying, we look at the options when every book cannot be kept on the shelves.

April through August is pupping season for great white sharks. Marine biologist Dr. Michael Domeier has been studying white sharks in waters off the coast of California and Baja California. We find out about the migratory patterns of great white sharks, where they live, feed and breed.

Why should farmers in the Midwest care about what's happening in the middle of the Pacific Ocean? How might the oil spill in the Gulf of Mexico impact the health of the world's oceans? We speak to the author of "Deep Blue Home: An Intimate Ecology of Our Wild Ocean."