The researchers, using drones kitted with cameras, spotted a group of orcas biting off bits from a marine plant called bull ...

Orcas, also known as killer whales, have been documented using an ingenious method to groom one another, a new study reveals, by detaching sections of seaweed to provide a communal back scratch.

The Darién Gap, a perilous journey for millions of migrants, has also become a corridor for the northward spread of the New ...

By Sean Lawrence West Virginia University When you think about ticks, you might picture nightmarish little parasites, ...

Ticks are spreading globally and bringing familiar conditions such as Lyme disease with them, as well as totally new ones.

Before going for a hike or hitting a park this summer, here’s what you need to know about ticks — and the diseases they carry ...

Parasitic worms that infect humans are not interbreeding with those that infect cattle as previously thought. This is good news for when it comes to controlling schistosomiasis, a disease caused by ...

Testicular toxoplasmosis shows that parasites can invade human testes, but symptomatic disease is very rare. Studies to date that show defects in the sperm of infected men are too small to draw ...

Sneaky parasite evades the human immune system by stripping cells and wearing them as a disguise Parasites are known to infect human cells through a variety of ingenious mechanisms. Many of them ...

This parasite rips apart human cells and wears them as disguises. E. histolytica kills at least 50,000 people every year. Microbiologists have a battle plan. By Andrew Paul.

Human infection is a dead end in the parasite’s life cycle. The worms are usually eliminated or expelled from the intestines within 3 weeks of infection. Treatment is surgical or endoscopic removal of ...