So what’s happened in the last 200 years that interests you? Are you into space flight stuff? (What would have happened if…)

Wars? (Could {war name here} have been prevented by {something} )?

Personal biography? (Is there someone who’s life interestes you, someone who made a real difference?)

Automobiles? (What would have happened if the electric car, invented around the same time as the gas-powered car, had taken off?–They had just found oil and needed to figure out some way to use it and earn money…)

Greenhouse gases and global warming? (What will we do?)

How about going a bit further afield…did you know that someplace in Africa they are trying to give birth control injections to elephants? What has caused that decision? Is it working?

I could go on, but you get the idea. Go on livescience.com for lots of interesting science tidbits that can lead you to all sorts of places….