Solar system montage with eight planets

Andrew Knoll

Harvard biologist and science team member, Mars Exploration Rover mission

Latest Planetary Radio Appearances

Life on Mars...and Earth

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!