NPR News: This week in science: Elusive antimatter, a brightening night sky and Fat Bear Week

This week in science: Elusive antimatter, a brightening night sky and Fat Bear Week
NPR's Ari Shapiro talks with Regina Barber and Aaron Scott of Short Wave about elusive antimatter, a brightening night sky and a competition among super-sized grizzly bears: Fat Bear Week.

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Science - October 6, 2023 at 04:12AM - This week in science: Elusive antimatter, a brightening night sky and Fat Bear Week