Extreme Heat
Let's Know Things
Colin Wright
4.8 • 593 Ratings
🗓️ 13 July 2021
⏱️ 31 minutes
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Summary
This week we talk about heat domes, wet-bulb temperatures, and memes.
We also discuss wildfires, humidity, and climate change.
This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit letsknowthings.substack.com/subscribe
Transcript
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| 0:00.0 | Perspiration is our body's way of cooling us down when the temperature of our environment is too hot for us to |
| 0:23.5 | otherwise efficiently endure to continue functioning. This is something that most mammals do, |
| 0:30.3 | and it's not the only method of thermoregulation of adjusting an entity's temperature available. |
| 0:36.1 | Plenty of other animals take other approaches to solving the same problem, |
| 0:39.8 | when there's a mismatch between what their innards can survive, |
| 0:43.8 | and at what temperature they optimally function, |
| 0:46.4 | and the reality of the temperature around them. |
| 0:50.4 | But we're actually pretty decent at this method, all things considered. |
| 0:53.8 | We have two different types of glands that produce sweat. But we're actually pretty decent at this method, all things considered. |
| 1:00.6 | We have two different types of glands that produce sweat, and perspiration is just another word for sweating. |
| 1:07.7 | And these sweat glands are automagically activated when we are in environments that are a bit too hot for our body's comfort. |
| 1:10.3 | And I say that we're pretty good at this because we are one of the relative few, |
| 1:14.9 | alongside horses and moles, that don't have our sweat glands and hair follicles connected, |
| 1:22.0 | which, it turns out, has allowed us to evolve the ability to produce comparatively massive amounts of sweat when |
| 1:30.4 | warranted. |
| 1:31.7 | Sweat is in some cases a little socially awkward, and because of the bacteria we have |
| 1:37.9 | tucked away in some of our cavities and folds, it can sometimes seem to smell. |
| 1:47.5 | Sweat itself is odorless, but that bacteria being flooded out of its skin home is what tends to give generalized body odor its individually |
| 1:55.6 | distinct fragrance. And sweat is associated with other things like nervousness and physical exertion, exercise, |
| 2:03.6 | and such, and with the floods of hormones that can knock our thermoregulatory systems |
| 2:10.6 | and the systems connected to those systems, temporarily out of whack. |
| 2:15.6 | In general, though, sweating is a positive thing, because it is |
... |
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