00:00I think I messed up. I thought animals could simply hide from the heat.
00:05But what's really happening is far worse. Imagine howler monkeys falling from trees,
00:10too weak to hold on in 43 degree heat. Mussels literally bake alive in their shells.
00:16Millions of barnacles, gone in a single blaze. In the Mojave Desert, birds spend so much time
00:22cooling off they barely breed, leading to a 43% drop in breeding species. But heat isn't just
00:29killing, it's sterilizing. Insects like sets of flies lose their fertility after a heat wave.
00:35Even zebra finches see sperm quality plummet at just 40 degrees. Add up mass die-offs,
00:41lost babies, and vanishing offspring, and you can see why scientists say extreme heat could
00:46wipe out wildlife. Nature isn't just feeling the heat, it's disappearing.
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