This program explores the past, present and future of the Sun's importance to our world. We are in a golden age of solar science. Scientists are making remarkable discoveries about the inferno at the Sun's core and the magnetic chaos of its surface. THE SUN asks experts whether the strengthening of the Sun's magnetic field could explain global warming and whether humans can protect themselves from the effects. Could the Sun's power be harnessed to meet the world's spiraling energy needs? It releases more energy every second than humans will ever use in the next million years. It's responsible for us being here in the first place. And, it just might be our only hope for the future.