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Giving coffee a jolt could help assess its quality

NPR | By Emily Kwong,
Rachel Carlson
Published April 30, 2026 at 4:22 PM CDT

NPR's science podcast Short Wave looks at the secrets behind scorpions' weapons, using electricity to measure the quality of a cup of coffee, and what shapes the content of dreams.

Copyright 2026 NPR
Emily Kwong
Emily Kwong (she/her) is the reporter for NPR's daily science podcast, Short Wave. The podcast explores new discoveries, everyday mysteries and the science behind the headlines — all in about 10 minutes, Monday through Friday.
See stories by Emily Kwong
Rachel Carlson
Rachel Carlson (she/her) is a production assistant at Short Wave, NPR's science podcast. She gets to do a bit of everything: researching, sourcing, writing, fact-checking and cutting episodes.
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