Add Yahoo as a preferred source to see more of our stories on Google. Hammerhead worms have been found near the Washington, D.C. area, the latest region to become a home to the invasive species.

We’ve all lifted a rock or flowerpot and found a long, slimy worm underneath. But have you ever done so and found a long, slimy worm with a head shaped like a shovel or a hammer? If you have, you ...

Hammerhead flatworms — an invasive pest that looks like a cross between a hammerhead shark and a leech — have been spotted in the Washington, D.C., area and across the United States. Experts say the ...

A creepy-crawly invasive species known as the hammerhead worm is reappearing in Texas, following several weeks of excessive rainfall. The hammerhead worm, a ground-dwelling flatworm, is lethal to ...

WASHINGTON — Earthworms, as we know, are garden champions, cleaning the soil by eating their weight in organic matter every day and aerating it as they wriggle around, creating tunnels to ease root ...

Hammerhead worms are an invasive species that have been spreading through the U.S. since at least the early 1900s. Michael Raupp is a bug guy. MICHAEL RAUPP: I try to demystify the lives of ...