NOVA scienceNOW

How Smart Are Dolphins? These brainy marine mammals can “read,” plan ahead, and communicate in astounding ways. See them read.

Origins of the Solar System The shock wave from a supernova may have triggered the formation of our sun and planets five billion years ago. Watch now.

The Psychology of Spaceflight NASA psychologist Al Holland says that a three-year return trip to Mars would be a mental challenge for any astronaut. Listen.

A One-Way Trip to Mars? Initial shock aside, some space scientists argue this is the only way to go. Go to Mars. NASA

Human Hibernation Medical researchers and emergency room doctors are testing therapies that cool down patients to save their lives. Chill out.