about 50 million years ago, according to a study published Nov. 21 in the peer-reviewed Zoological Journal of the Linnean Society. Amphisbaenians are a group of worm-like reptiles, typically ...

The lights likely repel predators. “It makes me happy to think that right now, somewhere out there, millions of pigbutt worms are tumbling through the ocean depths,” says Rebecca Helm ...

They've existed for about 600 million years. There are about 34,000 different types of worm; many are so small you wouldn't be able to see them without a microscope! Worms are hermaphrodite ...

The adult worms mate and release millions of microscopic worms, called microfilariae, into the blood. People with the worms in their blood can give the infection to others through mosquitoes.