Cut some types of flatworm into bits, and most of those bits can regrow into a whole body. But the identity of the stem cells that give these worms, called planaria, their regenerative capacity ...

The planarian flatworm Schmidtea mediterranea is an extraordinary animal. Even when cut into tiny pieces, each piece can regenerate back into a complete and perfectly proportioned miniature planarian.

A new flatworm, complete with skin, nervous system, primitive eyes, gut, muscle, and internal organs, can emerge from a body fragment hundreds of times smaller than the match-head sized original.

Humbertium covidum is an alien-looking flatworm. The species has a feeding frenzy that allows them to outcompete many other soil animals, making the dirt less fertile and stable, scientists say.

Life cycle of the H. americana flatworm. Symptoms tend to occur gradually, Emily Beeler, a veterinarian with the Los Angeles County Department of Public Health, said in a statement.

Fig. 1: Pluripotent stem cells enable planarians to achieve extraordinary feats of regeneration. (A) Planarians are able to re-grow an entire head in a matter of a few days. (B) The stem cells and ...

A tiny, freshwater flatworm found in ponds and rivers around the world that has long intrigued scientists for its remarkable ability to regenerate has now added a new wrinkle to biology. The ...

The flatworm’s tetrodotoxin probably comes from bacteria that live in its body, says Marian Litvaitis of the University of New Hampshire in Durham. Marine flatworms are good at borrowing ...

Scientists have discovered an alien hammerhead flatworm species that looks a bit like a miniature king cobra, or perhaps an itty-bitty snake with a moustache. The researchers found the tiny ...

When some flatworms can't find a mate, a new study says, they reproduce in a way that will make you thank the god of your choice you're not a flatworm. CNET freelancer Danny Gallagher has ...