Climate change, pollution, etc?

Yes but they also give out heat

Energy from electricity costs about four times as much as energy from gas.

There is no reason to fit tiny electric heaters in your house, expensive to run, which have no thermostats and are turned on and off regardless of temperature, and which serve only to warm the ceiling.
 
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I am sure there is globe warming, but each time one sees something pointed out as being a result of the warming and you know it has nothing to do with that, you start to wonder how many more are the same, all that coal was once CO² in the air, making the air denser, so animals could fly then which could not fly now, today's rubbish in land fill will likely be tomorrows fuel.
It's a tricky one, there aren't many weather events that can be categorically pinned on global warming. That's just how weather works. But it is fair to say that it causes more extreme weather events and makes them bigger when they do happen. Imagine you're watching an action film. If you turn the volume up during the quiet bits then they might just be a bit loud, but when there's a loud bit you'll blow your ear drums out.

As to the air density, nope, taking CO2 from 50ppm to 300 or more ppm isn't enough to change flying dynamics. The change in O2 % over geological time frames (it used to be higher iirc) may have been significant, but that's outside my area of knowledge.
 
There is a simpler view of the pole icecaps that has puzzled some pretty famous people for a long time. Why isn't all of the water there? Sound stupid but they are so cold that any moisture in the air that gets there freezes and drops out leaving extremely dry air. Winds circulate air all around the globe.
Nah, it's fairly straightforward. The north pole is floating so any excess that builds up there eventually breaks off and floats away to melt during the summer months.

The South pole is on land, so it can build up there (and until recently it was building up, now it's I'm retreat) but there isn't much rain. It's technically a desert. Even there the glaciers do move slowly to the sea. It might have confused some people once upon a time, but so did the motion of the planets.
 
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It's a tricky one, there aren't many weather events that can be categorically pinned on global warming. That's just how weather works. But it is fair to say that it causes more extreme weather events and makes them bigger when they do happen. Imagine you're watching an action film. If you turn the volume up during the quiet bits then they might just be a bit loud, but when there's a loud bit you'll blow your ear drums out.

As to the air density, nope, taking CO2 from 50ppm to 300 or more ppm isn't enough to change flying dynamics. The change in O2 % over geological time frames (it used to be higher iirc) may have been significant, but that's outside my area of knowledge.
it was something like 8,000 ppm before the carboniferous period, But that was a few 100 million years before before insects let alone birds and dinosaurs.
The vast take-over of the planet by trees certainly reduced CO2 to todays levels (400ppm) but the vast amount of oxygen they produced lifted oxygen levels up to nearly 40%. They reckon the bush fires were something to behold.
 
Nah, it's fairly straightforward. The north pole is floating so any excess that builds up there eventually breaks off and floats away to melt during the summer months.

Go argue with Einstein for one. There are others. Better still go to the artic circle and see it happen.
 
There is a simpler view of the pole icecaps that has puzzled some pretty famous people for a long time. Why isn't all of the water there? Sound stupid but they are so cold that any moisture in the air that gets there freezes and drops out leaving extremely dry air. Winds circulate air all around the globe.
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Gravity, when it builds up too high it slips off the side and back into the sea in what is known as a glacier
 
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