I don't think there's much point in bemoaning the state of the world unless there's some way you can think of to improve it. Otherwise, don't bother writing a book; go and find a tropical island and lie in the sun. ↗
That's not all our crops can do. We are also learning how to transform plants into factories. We can now raise plants that will create enzymes that would otherwise be created in chemical factories. ↗
Don't use words too big for the subject. Don't say "infinitely" when you mean "very"; otherwise you'll have no word left when you want to talk about something really infinite. ↗
People were very affected by the war. But it didn't mean you stopped painting unless you were called into the Army; then you just couldn't paint. But otherwise one continued. ↗