Surprising New Discoveries on Mars
While the Mars rovers have been busy on the surface of the red planet, scientists studying the output of probes orbiting Mars have been making impressive discoveries as well. We'll hear about some of their latest observations, including the theory that, near the Martian equator, a frozen sea of water may lie just a few feet below the planet's surface. The idea could have important implications for researchers looking for signs of life on Mars.
Guest:
James Head, professor, geological sciences, Brown University

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