Fortunately, asteroids as huge as the one thought to have knocked out the dinosaurs don't hit Earth every day. But a surprising number of smaller rocks do. In this video clip, meteorite hunter Rob ...
NOVA scienceNOW is a News magazine version of the long-running and venerable PBS science program Nova. Premiering on January 25, 2005, the series was originally hosted by Robert Krulwich, who ...
Scientists describe emergence, a science that studies how complex patterns and behaviors arise from the actions of individual units acting independently. This NOVA scienceNOW segment: states that ...
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