Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is the smallest animal ever? – Peter, age 9 ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. In the 19th century, the German zoologist Christian Bergmann pondered a simple ...

Discover one of the world’s smallest animals found in a backyard through detailed microscope footage.