Why Some People Are Born to Be Afraid Scientists are discovering that our tendency to develop certain phobias might be ...

Scientists found that ancient lead exposure shaped early human evolution. The toxin may have played a surprising role in the development of modern cognition and language. An international team of ...

Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This ...

Once a sperm has broken through to an egg cell in order to fertilise it, the two cells need to hold together tightly. This ...