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This week in science: How much exercise you need, flu resistance and fortified food

NPR | By Emily Kwong,

Regina G. Barber

Published April 2, 2026 at 5:41 PM EDT

NPR's science podcast Short Wave brings us stories on food fortification, why some people don't seem to get the flu, and a study on how much vigorous exercise you really need.

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All Things Considered US / World

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