PBS (DIRECT)

Butterflies are perhaps the world's most beloved insects. But beneath their colorful charm, there's a wealth of hidden scientific secrets that show butterflies to be smarter and more resilient than...

Hallucinogenic drugs?popularly called psychedelics?have been used by human societies for thousands of years. Today, scientists are taking a second look at many of these mind-altering substances?both...

A huge social experiment is underway. Fifty-five million Americans say they currently use cannabis, and that number is expected to grow as voters push for legalization in more and more states...

NOVA examines the science of our favorite animal companions. What can science tell us about the human relationships with cats and dogs? Producers: Laurie Cahalane, Melanie Wallace. Narrator: Eric...

From Bitcoin to NFTs, crypto is making headlines. But what exactly is it, and how does it work? Experts go beyond the hype and skepticism to unravel the social and technological underpinnings of...

NOVA and National Geographic present exclusive access to an astounding discovery of ancient fossil human ancestors. Deep in a South African cave, a special team of experts has brought to light an...

Nova: Day the Dinosaurs Died - Investigate how an asteroid vanquished the dinosaurs 66 million years ago. Join scientists as they drill into the impact crater and, for the first time, reconstruct the...

Since the Dead Sea Scrolls were discovered in 1947, these fragile parchment relics have intrigued scholars, religious leaders, and profiteers alike. The 2,000-year-old scrolls include the...

Nova: Death Dive To Saturn DVD

Leonardo da Vinci was a Renaissance genius. Not only did he paint masterpieces of art, but he was an obsessive scientist and inventor. NOVA investigates the secrets of Leonardos success. How did his...

Three women at risk of developing Alzheimer's join a groundbreaking study to try to prevent the disease, while sharing their ups and downs, anxiously watching for symptoms, and hoping they can make a...

NOVA: EAGLE POWER Narrated by Eric Meyers, this documentary explores what makes the eagle such a special predator, using one eagle to capture incredible footage of the species strength, eyesight, and...