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

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ScienceCasts: Earth Day Meteor Shower

At the end of a day devoted to Earth, people can look to the heavens for a beautiful shower of Lyrid meteors. Visit http://science.nasa.gov/ for more. http://www.nasa.gov/content/earth-right-now/ Click here to see more videos: https://alugha.com/NASA