Heat allowing plants to grow faster reaches a max pretty quickly followed by a significant drop in efficiency due to moisture loss in the leaves via the stomata (stomata are the small pores in leaves that open to take in C02 and expel O2)

Too hot and the leaves need to become smaller and reduce the amount of CO2 they absorb or else they lose too much water to the air and dry out.

Don’t know why I keep seeing this “it’s better for plants” nonsense. Like claiming a flood is good because it provides everyone water… before drowning them

Also, famine is what you went for? We produce more than enough food right now, it’s distribution that’s the problem. Or will hotter temps allow for easier food distribution?

Edit: To add, it doesn’t matter what the world was like millions of years ago or how animals will adapt… we are adapted for the unusually stable climate of the last few thousand years. Our entire civilization; food production, population distribution, etc; is all based on the current climate. As the climate changes the cost of adapting will become untenable. If the 2 million refugees of the Syrian war was bad, what do you imagine a billion+ climate refugees will be like. There are already population migrations because of climate change, megacities running out of water (dependent on no-longer predictable rains or melted glaciers) rising coastlines, declining seafood stocks, etc. This isn’t going to happen tomorrow, but it will probably be your children and children’s children that will really start to feel its impact

We will adapt, we’re the most adaptable creature that has ever lived, but without doing something now to combat climate change the costs will be unimaginable.

And this may seem doom and gloom… but that’s because it is! We’ve known definitively about this for 50 years and have done nothing. The oil companies themselves discovered this, but chose to bury it and spend billions on misinformation.