Aaron Celestian Talks Life on Mars
"On Earth we look for things that are moving or growing to identify life. On Mars, it's not that easy." 
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There's Climate History at the Bottom of the Ocean
Looking at ocean sediments reveals how Earth has changed over time.
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Gems of the Americas
Travel back in time with one of NHM's most beloved gems, this video from our vaults. 
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Hot Rocks and Natural Beauties
Dr. Anthony Kampf, the museum’s Curator Emeritus of Mineral Sciences, says his work can sometimes seem like an episode of the TV show CSI.
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Minerals on Mars
Scientists have long wondered if Mars could support life. But what exactly should we look for?
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