Scientists found the 500-million-year-old fossil of a "penis worm" in the Grand Canyon—and reconstructed how the creature ...

A trove of fossils, including a penis worm with a spiked, invertible throat, suggests this spot may have been a cradle of Cambrian evolution.

Researchers from the University of Cambridge have unearthed thousands of microscopic fossils from the iconic Canyon, ...

A century-old fossil once thought to be a worm is now rewriting the story of arthropod evolution as the first-known nonmarine ...

The hornworm host, although doomed, might survive through the stage where the wasp larvae are feeding and developing inside ...

The worms, seen through a microscope, swim in a “lawn” of E. coli bacteria. Why a Tiny Worm May Have the Answers That innate immune response is the first line of defense in humans, Kim said.

Surrounded by tables selling fruits, vegetables or honey, Cynthia Dort’s table at the Corvallis Farmers Market is stacked ...

Surgeons found a 3-inch-long parasitic worm known as Ophidascaris robertsi. CDC Doctors aren’t sure how a parasite of snakes found its way into the woman’s body.

My husband placed a wooden worm from the dollar store on the composter to avoid confusion, I assume. Sabine Heinlein/NYT Wirecutter The footprint of my indoor worm composter was comparable to that ...

Because genes encode the instructions to build these proteins, Sato and his colleagues set out to examine how both species' gene activity changed during the course of a horsehair worm infection.