YORK COUNTY, Pa. — A new invasive species of ticks is spreading rapidly in south-central Pa. Their numbers are growing, and it’s called the Asian Longhorned tick. The reddish-brown colored species is ...

Periodical cicadas are native to the eastern United States and can't be found anywhere else in the world. They spend most of ...

A tick that's rapidly spreading through Pennsylvania and elsewhere was found to carry a potentially dangerous bacterium.