June 24, 2018, 7:51 a.m.
Exposed Bedrock on the Red Planet's Hale Crater
This image from NASA's Mars Reconnaissance Orbiter shows Hale Crater, a large impact crater.
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Scientists have characterized a protein that enables certain microorganisms to recognize and absorb ammonium in their environment. Ammonium is considered a toxin that pollutes ecosystems - but for these bacteria it represents an important nutrient and energy source.https://www.sciencedaily.com/releases/2018/01/180113093731.htm
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