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🗓️ 12 March 2020
⏱️ 3 minutes
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0:00.0 | This is a passenger announcement. You can now book your train on Uber and get 10% back in credits to spend on Uber eats. |
0:11.0 | So you can order your own fries instead of eating everyone else's. |
0:15.0 | Trains now on Uber. T's and C's apply. Check the Uber app. This is scientific American 60 Second Science. I'm Annie Sneed. |
0:27.0 | Rice Crispies. rain hitting a tin roof, bacon frying? |
0:37.0 | How about noisy creatures known as snapping shrimp? |
0:41.0 | Warm temperate and tropical coastal waters around the world are teeming with these noisy little creatures. |
0:47.0 | They snap their claws so fast that they produce a bubble. |
0:52.0 | When the bubble bursts, it makes a loud popping sound. |
0:56.0 | It's a sort of persistent background noise, the snapping strip kind of crackling. |
1:00.0 | Aaron Mooney, a marine biologist at Woods Hole Oceanographic Institution. |
1:05.0 | The shrimp produced the loud sound to stun prey. |
1:08.0 | So how would these shrimp be affected by oceans getting warmer in coming years. |
1:14.0 | To find out, Mooney and his colleague Ashley Lillis |
1:17.0 | analyzed audio recordings of the critters in their natural environment. |
1:21.0 | They also performed lab experiments with snapping shrimp collected from the wild and water of varying temperatures. |
1:27.0 | And they found that when water heats up, the shrimp starts snapping more, and the water's soundscape gets louder. |
1:35.0 | They shared their findings in February at the Ocean Sciences meeting 2020 in San Diego. |
1:41.0 | The researchers aren't sure what's causing this change in shrimp behavior, but they have an idea. |
1:46.8 | We don't precisely know the mechanism of why they're snapping more often. |
1:51.2 | What we think is that these guys are basically just ectothermic animals so that |
1:54.8 | means that they're directly responding environmental conditions around them and so |
1:58.7 | basically as you increase the water temperature increases their metabolic rates or |
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