Diving into mysterious Crater Lake
Scientists use aquatic robots and highly sensitive sonar to study its pristine, self-contained ecology.
Photos: A water-filled crater Video: Deep-diving robotFri Aug 25 04:00:00 PDT 2006 | Read full story
Video of the day
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Latest rover explores the depths of one of the clearest bodies of water in the world.
Promoting alternative energy without being too green
(Like there IS such a thing?)
Astronomers count Pluto out
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