In a first, NASA's Curiosity rover has discovered pure sulfur on Mars. And, we revisit a conversation from 2015 about Alexander von Humboldt and Andrea Wulf's “The Invention of Nature,” which is our August book club pick.

What A Rodent Brain Shows Us About Love | If Colorado Was Flattened, How Big Would It Be?

Covering the outer reaches of space to the tiniest microbes in our bodies, Science Friday is the source for entertaining and educational stories about science, technology, and other cool stuff.

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