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Sleep and Vaccines, Moth-Eating Bears, Feeling the Metaverse

Curiosity Weekly

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The Rise and Fall of the Army Cutworm Moth

Grizzly bears travel hundreds of miles to eat army cutworm moths in the North Rocky Mountains. By day, they rest about at the top of peaks as tall as 13,000 feet but by night slurp down alpine nectar which fattens them up by 75% of their body mass. Researchers set up a mobile tracking radar that kept track of how many army cutworms were coming to the area and discovered that 5 million of these suckers came to one pass in the Rockies during the summer.

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