These parasitic relationships can be very draining and harmful to the other person's mental and emotional well-being. Here ...

There are concerns New World screwworm flies, which can be dangerous to humans, could cross into southern Texas.

By Sarah Brown In Brazil’s Pantanal, the world’s largest tropical wetland, Paul Raad crouched in the undergrowth, scanning ...

African great apes were the original host to the parasite. But a chance genetic mutation about 50,000 years ago turned it into a threat to humans, experts have found. The findings, published in ...