Biology

These caterpillars carry a toxic chemical cocktail and Inquisition-like delivery implements—and their geographic range is expanding

Tiny frogs seem to skim the water’s surface, but high-speed video reveals their secret

In honor of the Year of the Snake, let’s appreciate the strange anatomy and evolution of these slithery reptiles

The evolution of joints is how we went from blobs to badasses

A century after the Scopes trial, hopeful prospects beckon for teaching the unifying principle of the biological sciences in the U.S.’s classrooms

This strange sea creature stumped scientists for 20 years. Here’s what it really is

The genes that build the cartilage of fish gills were repurposed to build the cartilage in mammals’ outer ears

Tiny specks called biomolecular condensates are leading to a new understanding of the cell

DNA inherited from Neandertals may influence modern human cognition

Just as people often yawn or scratch themselves when they see someone else do so, for chimpanzees, peeing is contagious

Songbirds may socialize across species during nighttime migrations

Transplanted chloroplasts endured two days inside animal cells—and got to work