Many aspects of insulin signaling remain a mystery. Scientists have now uncovered tantalizing new clues about the hormone's molecular behavior.

Genetic engineering can limit the spread of organisms that carry diseases deadly to humans. But how to devise a system with built-in controls?

To err is human. Artificial intelligence promises to reduce mistakes in diagnosis, treatment and more.

Scientists have known for decades that caloric restriction leads to a longer lifespan. A new study reveals its effect on our immune systems.