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Photo credit: Copyright © 2005 David Monniaux, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>, via Wikimedia Commons.

How We Bite with Apatite: The Wonders of a Hard Mineral

Explore the features of a remarkable mineral erupted from volcanoes that is found in our teeth. How did it get there? Read More ›
Exo-Planet_K2-18_b
Image: An artist imagines exoplanet K2-18b, by Arndt Stelter, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons.

Fact Check: Did Scientists Really Detect Evidence of Life on Exoplanet K2-18b?

The molecule is dimethyl sulfide (DMS) or dimethyl disulfide (DMDS), and on Earth its sole known source is life (specifically, marine phytoplankton algae). Read More ›

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