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Andrew Knoll

Latest Planetary Radio Appearance

Life on Mars...and Earth

04/05/2004 | 0:29:54
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We visit Harvard biologist Andrew Knoll for a conversation about finding life on the red planet. Emily Lakdawalla is seeing red on another of Earth's neighbors, and Bruce Betts spins a tale of Death Stars, cockroaches and trivia contests on What's Up!

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