The number of insect species is mind-boggling — and they are a critical part of the environment. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A California zoo has put the rarest insects on Earth — also known as “tree lobsters” — on exhibit to the public as part of a breeding program, officials said. Lord Howe Island stick insects — so named ...

Over 300 million years ago, before the age of giant dinosaurs, Earth was covered with giant insects. Why were insects so enormous during this time? What did oxygen have to do with it? And why did ...