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  • “Exploration is in our nature.” - Carl Sagan

Planetary Radio • Apr 05, 2004

Life on Mars...and Earth

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On This Episode

Andrew Knoll

Harvard biologist and science team member for Mars Exploration Rover mission

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!