NOVA

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S31 E9 MARS: Dead or Alive

本集简介

NASA gambles on two rovers sent to determine if the red planet ever had conditions suitable for life.

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2003/11/18 S31 E8

Volcano Above the Clouds

Join a scientific expedition to the glacier-capped summit of Kilimanjaro, Africa's tallest mountain.

下一集

2004/01/20 S31 E10

Secrets of the Crocodile Caves

Rare lemurs and crocodiles with bizarre cave-dwelling behavior draw scientists to a remote corner of Madagascar.

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