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.

The world has far more bees than anyone realized. Scientists have, for the first time, estimated just how many species of ...

Here’s what you’ll learn when you read this story: Now, three years later, Wiens and University of Arizona graduate student Yinpeng Zhang have turned to counting cryptic vertebrate species by ...