Shouldn't plants grow successfully near highways and factories where CO2 level is higher?

Your question is well nigh incoherent, but I'll try do the best I can. In general as the temperature goes up we expect more water vapor in the atmosphere. The Clausius-Clapeyron relation tells us that, but it's also pretty much common sense that there is more evaporation when it gets warmer.

There is lots of observational evidence for this too--the annual cycle of water vapor is evident pretty much everywhere and there's more when it's warmer. Now if it rains and there's more water vapor in the air, we expect more rain. There is lots of evidence for this and weather forecasters take the amount of water vapor into account while making forecasts of rainfall amounts.

However, just because there is more water vapor in the air DOES NOT mean that it will rain more in a particular place. For example in California there is a negative correlation between the average amount of water vapor in a location and the average amount of rain. That's because water vapor is just one factor--you also need the right dynamics--the upward motion of air that produces clouds and rain.

If you don't have that, the water vapor is just floating over your head, keeping it warm at night but not bringing rain. Year in, year out the places in California that have the highest amounts of water vapor are the deserts of the Imperial Valley. That's because they're close to a source of very warm water, the Gulf of California.

With global warming, all places are not created equal. It's well known that the Arctic is warming faster than the tropics (as expected). That decreases the pole to equator temperature gradient and can expand the dry subtropical region under the descending branch of the Hadley Cells, but it also may make them weaker.

It's not exactly clear what will happen, but it's generally thought that this will mean more dry years. However in those years when it is rainy (like a future El Nino year) then it may be even rainier, since the amount of water vapor in the atmosphere is greater. That's why some people expect the variability (which is already high) to increase further.

Now what about snow? Many deniers seem to think a lot of snow falsifies global warming, although why they think that I don't know. Antarctica is quite cold and gets very little snow.

The mountains of the west coast are comparatively warm, but get enormous amounts of snow. In general, places that get a lot of snow aren't going to be that cold, because when it's very cold there is not much water vapor in the atmosphere to make clouds and snow. The heaviest snows occur when temperatures are just slightly below freezing.

There have been peer-reviewed studies that show that snow levels in Western North America have been increasing. This could create an interesting scenario (now try to follow along deniers) where you could have both less snow and more snow IN ESSENTIALLY THE SAME PLACE. How is this possible?

As temperatures go up in the future, snow levels will keep increasing. The amount of water vapor in the atmosphere will also increase, so it's possible that if the dynamics stay about the same, more precipitation will fall. Consider a mountain, with some areas below the snow line and some above.

As the snow level increases, those places that are around that level will have less snow in the future, since there will be times when they will be getting rain and not snow. However, for areas that are well above the snow line, with increased water vapor and increased precipitation they will be having MORE snow than they did previously. So there you have it, less snow and more snow in (almost) the same place.

That's the problem with trying to examine a complicated scientific issue from a tabloid headline perspective--the world isn't that simple, you need to look at things in detail. Just thinking that it will be one way or the other is too simple-minded.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.