Why Mice Have Longer Sperm Than Elephants

Why Mice Have Longer Sperm Than Elephants

In the animal world, if several males mate with the same female, their sperm compete to fertilize her limited supply of eggs. And longer sperm seem to have a competitive advantage, but even when it…
Why Some Insects Kill Their Mothers

Why Some Insects Kill Their Mothers

One day a few years ago, while working on wasps in a rainforest in Costa Rica, entomologist Kevin J. Loope, a postdoctoral researcher at the University of California, Riverside, began reading about…
How Plants Turn Into Zombies

How Plants Turn Into Zombies

When flowering plants are surrounded by a large number of insects, usually both sides profit from the encounter. Feasting on the plant juice and pollen, the insects pollinate the flowers and thus…