The biosignatures of life on Earth do not remain static, but change considerably over the planet's habitable lifetime.
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Extremeophiles and Extreme Environments: November 2013
A rare, recently discovered microbe that survives on very little to eat has been found in two places on Earth: spacecraft clean rooms in Florida and South America.
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- 21 Apr: Nomination Hearing - Sen. Bill Nelson
- 22 Apr: What is it about humans that drives us to travel and explore the unknown?
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