But adding too much CO2 can damage plants. Just think of it with your brain: If someone gives you a scoop of ice cream, you're fine. But too much ice cream and you die. Same thing with plants. We give too much CO2 to plants, and they suffer. CO2 levels are rising beyond pre industrial balance, so plants are going to start struggling. Also, climate change is still another issue. I'm sure you know how that works. Storms which destroy homes and crops, as well as diseases harmful to humans.