Matter & Energy

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person vaping

VAPOR VIEW  The vapor from an e-cig can contain substantial amounts of toxic gases, a new study finds. And much of those toxicants trace to the solvent used to carry flavorings and any nicotine through the device.

iron

PRECIOUS METAL  Geochemists explore platinum, gold and other rare elements that are attracted to iron to understand how Earth's core formed billions of years ago. 

air bubbles in a rock

NOT-SO-FRESH AIR  Ancient air embedded inside rock salt for 815 million years suggests that oxygen was already abundant when the first animals appeared. The microscopic air bubbles were trapped inside rectangular inclusions (one circled in red) in the rock.

Matter & Energy

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