Why do we have kneecaps but no elbow caps? | AskScience Blog

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Thursday, July 7, 2022

Why do we have kneecaps but no elbow caps?

Why do we have kneecaps but no elbow caps?


Why do we have kneecaps but no elbow caps?

Posted: 07 Jul 2022 03:53 AM PDT

And did we evolve to have kneecaps or did we lose elbow caps somewhere along the way?

submitted by /u/TophsYoutube
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If all precipitation stopped, how long would it take for all the rivers to empty into the oceans?

Posted: 07 Jul 2022 07:24 AM PDT

When was it realized/ proposed that modern birds were actually dinosaurs?

Posted: 07 Jul 2022 09:02 AM PDT

Was there a specific year when it was first theorized that dinosaurs and birds were the same group of animals? Or was there more of a gradual process where bits and pieces of information were gradually added together to come up with a tentative suggestion that there may have been a link between the two groups which has steadily grown over time?

Also, was there anybody in particular who influenced this theory?

submitted by /u/A_HECKIN_DOGGO
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How do Mosquitoes Suck?

Posted: 07 Jul 2022 08:20 AM PDT

I've briefly read about the 6 needles they use in their proboscis, but I want to know how the blood is moved from the bloodstream to the mosquito and cannot find anything. How similar is it to how we suck through a straw where we create a lower pressure environment in our mouth and the liquid moves to fill a pressure difference? Can a mosquito mouth do what we do?

submitted by /u/SpaceMangos
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How long does California have before it becomes an island or a crunched-up mountain range?

Posted: 06 Jul 2022 07:11 PM PDT

I vaguely recall hearing that California is on a different tectonic plate than the rest of the landmass that is currently North America. I don't recall if California's tectonic plate is moving away from or into the rest of North America, but it's only a matter of time before it's no longer part of America as we know it. The question is, how long is it going to be before we have to start building literal bridges between California and the rest of North America?

submitted by /u/Luigifan18
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