ScienceCasts: Methane Stinks? On Earth, Mars, and Beyond

NASA is sniffing out the sweet smell of methane on Earth, Mars and beyond. It's a greenhouse gas and, in some places, possibly a sign of ancient life. Visit http://science.nasa.gov/ for more. Click here to see more videos: https://alugha.com/NASA

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ScienceCasts: The Power of Light

A new NASA study is investigating how different light spectra can be used to effect astronauts' sleep, or lack of sleep. NASA Science: http://science.nasa.gov/ International Space Station: http://www.nasa.gov/station Click here to see more videos: https://alugha.com/NASA