Season 40

NOVA

Asteroid: Doomsday or Payday?

S40 Ep24 | 53m 49s

Will future asteroids trigger massive extinctions—or be mined for precious minerals?

NOVA

At the Edge of Space

S40 Ep23 | 52m 52s

Can scientists unravel the mysterious phenomena that lurk between Earth and space?

NOVA

Manhunt—Boston Bombers

S40 Ep14 | 53m 10s

Which technologies worked in the race to track down the men behind the marathon attack?

NOVA

Australia's First 4 Billion Years: Strange Creatures

S40 Ep12 | 53m 45s

After a massive extinction, diverse marsupials came to dominate this isolated continent.

NOVA

Australia's First 4 Billion Years: Monsters

S40 Ep11 | 54m 15s

Some 250 million years ago, some of the largest, most dangerous reptiles ruled this land.

NOVA

Australia's First 4 Billion Years: Life Explodes

S40 Ep10 | 54m 10s

Fossils reveal how life’s explosion in the ocean was recreated on dry land.

NOVA

Australia's First 4 Billion Years: Awakening

S40 Ep9 | 54m 10s

Australia’s landscape holds clues to Earth's early history and the beginning of life.

NOVA

Meteor Strike

S40 Ep13 | 53m 49s

A meteor burst into a fireball over Siberia. Can we spot the next deadly asteroid in time?

NOVA

Mind of a Rampage Killer

S40 Ep8 | 52m 53s

Can science help us understand why some people commit horrific acts of mass murder?

NOVA

Earth From Space

S40 Ep6 | 1h 52m 52s

Detailed satellite images reveal the web of connections that sustain life on Earth.

NOVA

Building Pharaoh's Chariot

S40 Ep5 | 52m 52s

A team uncovers the advanced engineering behind an ancient Egyptian war machine.

NOVA

Decoding Neanderthals

S40 Ep2 | 53m 10s

Shared DNA reveals a deep connection with our long-vanished human cousins.

NOVA

Doomsday Volcanoes

S40 Ep1 | 52m 52s

Could the explosion of Iceland's ticking time bombs cause cold and famine worldwide?