Evolution can be an arms race between predator and prey — as predators develop new killing tactics, prey respond by evolving camouflage abilities, or developing defense mechanisms. A team at the ...

For millions of people with diabetes, insulin is essential medicine. But for some ocean-dwelling predators, insulin is a weapon. With a burst of venom, a fish-hunting cone snail can drop the blood ...

Leeches might seem like relics of a bygone age of medicine, but they haven’t outlived their usefulness to people yet. The freshwater leech Helobdella austinensis can eat its weight in snails every day ...