Biology

What are thoughts made of?

Is it possible to control someone’s thoughts?

Could I put a computer chip in my brain to make me smarter?

How do doctors detect cancer in the human body?

Why don’t we get cancer of the hair or the fingernails?

Why do I have to take some medications every four hours but others only once a day?

What makes nerve gas so dangerous?

Why can’t machines — or humans — sniff out drugs or explosives as well as dogs?

Can hearts, livers, and kidneys be grown in the lab for human transplants?

Why does our hair turn gray — as opposed to green or some other color — as we age?

How does a random group of molecules form a thinking, breathing human?

How do medicines know where in the body to start working?