One of the ways bedbugs spread is they hitch rides on airplanes.
For years, scientists have been trying to figure out the nature of the relationship between cleaner fish and their clients.
Ancient poop reveals that Romans suffered from intestinal parasites, despite their sophisticated sanitation system.
Sugar beets are susceptible to wormy parasites that decrease crop yields.
Scientists hope a new malaria vaccine will prevent some of the 200 million yearly cases of the deadly illness.
Mistletoe lacks genes found in all other plants and animals.
As temperatures rise due to global warming, leafhoppers are spreading their campaign of terror on plants.
The oxpecker and the rhino make quite the odd couple but they need each other.
Invasive species constitute the second biggest danger facing the world's biodiversity.