UC San Diego Health study documents fewer early-stage and more late-stage breast cancer diagnoses as patients delay care.

Did someone spoil the next episode of "Game of Thrones"? They might have done you a favor.

What makes a jellyfish glow? For scientists, asking that simple question led to a powerful new tool that’s completely transformed medicine — and won the Nobel!

For four decades UC San Diego atmospheric scientist Veerabhadran "Ram" Ramanathan has warned that carbon dioxide and other emissions from human activity are heating up the planet. One of the first scientists to predict global warming, his models of rising temperatures have proved remarkably accurate.

Under current guidelines, the planet is on target to warm up 2 degrees Celsius by 2050 and 4 degrees by 2100, triggering serious large-scale problems by the end of the century.