I'm struggling to not laugh at this "science for people who'll believe anything".
Firstly there's "wetter". Kind of like asking a woman in a shower if she's "wet", rather ambiguous really.
Here's the thing, right. If the world is warmer, does this mean there's more water in the world or not? Probably not, probably the same amount of water. When it's cooler, then more water gets frozen. We know this because sea levels drop when the world is cooler, because a lot of the water ends up as ice on land. And when it's warmer this water then ends up in the sea, because sea levels rise.
Our atmosphere holds a lot of water.
www.livescience.com
Get this: "96.5% of the planet's water supply is found in the oceans,"
But I'm guess, in your own special way, you're trying, somehow, to make an argument that there's more water in the atmosphere and it rains more.
Here's the thing. The equator has lots of jungles, because it's hot.
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Jungles of the world. Mostly around the equator, but some places have jungle much further away, other places, like east Africa have no jingle except on the east coast of Madagascar.
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Here's a rainfall map. Yes, more rainfall in the equator region. Then you have north Africa. Almost nothing. It's very hot there, damn, I went to Egypt and I threw up from dehydration. It's HOT there. Hot weather does not necessarily equate to much wetter. The hottest places on Earth are places which are exceedingly dry.
There are things called weather patterns, which mean that on the west coast of South America, it's very dry. Lima in Peru almost has no rain, it might have a kind of wet fog, but not really rain. Ruins have lasted hundreds of years made out of mud, simply because of the Humboldt Current.
en.wikipedia.org
The other thing is that in the tropics you have rainy season and dry season. The UK, not very hot at all, summers are quite nice there, it rains A LOT.
Now, imagine that desertification is INCREASING in some areas. Why?
Desertification - Wikipedia
Some of it is due to human influences, some due to natural things, like global warming. The Sahara is getting BIGGER. The Gobi Desert is getting BIGGER.
To say "it's getting hotter, therefore wetter" is to totally ignore what happens with weather patterns, and that the Earth does not have one uniform weather system for different latitudes.