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How prairie dogs use the Bernoulli’s principle.
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How prairie dogs use the Bernoulli’s principle.
In order to ensure sufficient oxygen within their burrow, one of the entrances is built with a raised mound of dirt, while the other is not. This determines different wind velocities and different pressures + natural ventilation
有趣
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twitter.com)
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Massimo
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A compilation of Hamas clips shows how the terror group invaded southern Israel yesterday. First they bombed Israeli observation towers and weapons systems on the border, then fired hundreds of rockets as terrorists on paragliders flew over the border. Moments later, Hamas…
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A compilation of Hamas clips shows how the terror group invaded southern Israel yesterday. First they bombed Israeli observation towers and weapons systems on the border, then fired hundreds of rockets as terrorists on paragliders flew over the border. Moments later, Hamas…
时政
(
twitter.com)
00:01:41
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Scientists have identified a reversal of the long-standing Flynn effect—the roughly 200-year trend of rising average intelligence (measured via IQ and cognitive tests) across generations.
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Scientists have identified a reversal of the long-standing Flynn effect—the roughly 200-year trend of rising average intelligence (measured via IQ and cognitive tests) across generations.
For the first time in modern recorded history, Generation Z (born roughly 1997–2012) shows
有趣
(
twitter.com)
•
Massimo
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