Dr. Sean Carol, a biologist and professor at the University of Wisconsin at Madison, on his latest book about evolution. The Pentagon and nuclear weapons and the stance that these weapons will be used to deter terrorists. Global warming and what is causing it in Greenland. Italian astronomers have noted that a gamma ray burster exploded 12.5 billion years ago, near the birth of the universe itself. Utah might possibly be the United States next waste dump.
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