Ever noticed the Fn key on your Mac or Windows computer? It serves several purposes, but you'll need to learn how to use it.

The utility function measures a consumer’s preference for goods or services in terms of satisfaction. Learn how to calculate it and why it’s important to economists and businesses.

ENCODE, the $185-million successor to the Human Genome Project, promises to reveal new details about our DNA. But controversy persists as geneticists remain at odds over one little f-word—"function" ...