Maybe you’ve wondered about it late at night as a mosquito buzzes in your ear. Or when you kick over a rock and watch dozens of little critters crawl away: How many types of insects are there in the world? Scientists have been interested in answering this question for years. A new study — based on a census of tiny and, frankly terrifying, parasitoid wasps — suggests there’s than previously thought. Like, more that are just waiting to be discovered.
Read more Trump’s arch clears another hurdle, setting up a big debate: Do height limits apply?