Science

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The Kyoto Treaty, signed in 1997 to combat global warming, went into effect Wednesday. Gwen Ifill leads a discussion on the newly enacted treaty and the U.S. decision not to participate.

Scientists around the world are looking to coral reefs for the next big medical breakthrough. Correspondent Betty Ann Bowser explores the potential of these "rainforests of the sea" to provide the raw materials for life-saving drugs in the second of…

One of the medical organizations that has invested the most in technology aimed at reducing medical errors is the Veterans Administration. The following is an extended transcript of Dr. Jonathan Perlin, undersecretary for health affairs at the Department of Veterans…

One of the medical organizations that has invested the most in technology aimed at reducing medical errors is the Veterans Administration. The following is an extended transcript of Dr. James Bagian, director of the National Center for Patient Safety at…

Some scientists are concerned that overfishing, pollution and global warming are killing parts of the world's coral reefs. Correspondent Betty Ann Bowser explores what is being done to save the reefs in part one of a two-part series.