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 new study focused on cryptic species—animals that look the same but are genetically different—found that they’re more widespread among vertebrates than we previously thought.

New research from Brazil shows terrestrial insects there are declining both in abundance and diversity, while aquatic insects are largely staying steady. Given a dearth of long-term data on tropical ...