1: PREVIEW: IS THERE WATER ON MARS? Colleague Bob Zimmerman presents the unsolved puzzle of did water flow on the surface of Mars once upon a time? More to come.

The John Batchelor Show - A podcast by John Batchelor - Sabato

PREVIEW: IS THERE WATER ON MARS? Colleague Bob Zimmerman presents the unsolved puzzle of did water flow on the surface of Mars once upon a time? More to come. FEBRUARY 1951

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