Up To Date | Hummingbird Divebombs; Collapsing Ice Sheets

This week: A study looking into how male hummingbirds divebomb fast enough that their tail feathers make high-pitched squeaks; and new evidence explaining why sea levels were 6-9 meters higher about 150,000 years ago (even though the climate was just about as warm as it is today), and why that’s especially relevant now.

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