An egg or a sperm cell contains half of the normal genes an organism needs. They fuse together to form a new individual.
It’s not science fiction: Science can already eavesdrop on and influence our thoughts. Here’s what our readers think about it.
New technologies aim to listen to — and maybe even change — your brain activity. But just because scientists can do this, should they?
Gravity is an attraction between objects with mass. The more massive the object, the more gravity it’s got.