Reakirt's blue butterflies were moving among the flower heads of white clover in my lawn. I presumed that they were nectaring, but I watched closely and discovered that they were ovipositing. They ...

Erol Akçay, a biology professor at Penn, recently conducted a research about mutualism in ecosystems. New research from a Penn professor and a Penn alum shows that mutually beneficial relationships ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

In Tanzania, we watched on many occasions when small flocks of red-billed birds descended upon the backs of giraffes, cape buffalo, elephants and hippopotamuses, prancing around like they owned them.

Many studies of evolution focus on the benefits to the individual of competing successfully -- those who survive produce the most offspring, in Darwin's classic 'survival of the fittest'. But how does ...

A golden crown flying fox, one of many species of bats, is a keystone species that helps fertilize the forest with its droppings. Keystone species helps define an entire ecosystem Without keystone ...

If your child is putting on their school uniform for the first few times, and learning their way from the school gate into their reception class, they're going through what education researchers like ...