On a rainy day, you'll often see lots of earthworms on sidewalks and roads. But what makes the worms crawl away from the ...

DEAR JOAN: Can you explain the behavior of the local population of earthworms that insist on leaving their deep, dark underground abode to explore above ground after a heavy rain downpour? In our ...

Hammerhead worms have been found near the Washington, D.C. area, the latest region to become a home to the invasive species. Hailing from Southeast Asia and so far preferring hotter climates in the ...