Microplastics is probably a big one. We're just making more of it every year and they will never disappear. It's incredibly stupid and everyone just keeps using

Microplastics is probably a big one. We're just making more of it every year and they will never disappear. It's incredibly stupid and everyone just keeps using it, even in stuff like body wash, sunscreen and toothpaste. People like us should get together and fill the world with at least sensors so that it becomes more visible.