These Monkeys Always Give Birth to Twins – How Do They Do It?

Unlike all other primates, clawed New World Monkeys almost always give birth to twins. But why? It turns out these animals have a unique set of adaptations that make it possible — and could prove useful to humans as well. » 12/31/13 7:30am 12/31/13 7:30am

The Mystery of How Identical Twins Develop Different Personalities

Despite having the same genetic makeup, identical twins have their own distinctive personalities. Just how their individuality emerges has remained a bit of a mystery. But now, researchers have found that life experiences affect brain development — and this may help us understand how personalities form. » 5/09/13 11:11am 5/09/13 11:11am