I recently read the article about Catatumbo lightning [2], which gave me the desired feelings of cool, surprising, and scientifically interesting. I'd love to be aware of more such topics. I suppose it doesn't even have to be Wikipedia; it's just a good medium for this sort of thing.

1. https://xkcd.com/1053/

2. https://en.wikipedia.org/wiki/Catatumbo_lightning