Extras

Video thumbnail: NOVA Survivors Recount Bridge Collapse in Genoa, Italy

NOVA

Survivors Recount Bridge Collapse in Genoa, Italy

Hear from two survivors of a tragic bridge collapse.

Survivors Recount Bridge Collapse in Genoa, Italy

Video thumbnail: NOVA Mammal Fossils Fill in Missing Piece of the Timeline of Life

NOVA

Mammal Fossils Fill in Missing Piece of the Timeline of Life

This trove of mammal fossils paints a timeline of life after the dinosaurs died.

Mammal Fossils Fill in Missing Piece of the Timeline of Life

Video thumbnail: NOVA Paleontologist Makes "Game-Changing" Fossil Discovery

NOVA

Paleontologist Makes "Game-Changing" Fossil Discovery

The Denver Basin preserves a pristine record of ecosystem recovery.

Paleontologist Makes "Game-Changing" Fossil Discovery

Video thumbnail: NOVA Rise of the Mammals Preview

NOVA

Rise of the Mammals Preview

Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.

Rise of the Mammals Preview

Video thumbnail: NOVA How Fossilized Plants Tell Us About the Evolution of Animals

NOVA

How Fossilized Plants Tell Us About the Evolution of Animals

Plants can help us understand how life rebounds after a mass extinction.

How Fossilized Plants Tell Us About the Evolution of Animals

Video thumbnail: NOVA How Voyager discovered that Neptune is oddly warm and stormy

NOVA

How Voyager discovered that Neptune is oddly warm and stormy

Neptune has swirling clouds and strong winds. Can scientists figure out why?

How Voyager discovered that Neptune is oddly warm and stormy

Video thumbnail: NOVA The Planets: Ice Worlds Preview

NOVA

The Planets: Ice Worlds Preview

Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.

The Planets: Ice Worlds Preview

Video thumbnail: NOVA Five Facts About the Tilted Planet

NOVA

Five Facts About the Tilted Planet

Uranus is more than just the tilted planet in our solar system.

Five Facts About the Tilted Planet

Video thumbnail: NOVA Five Facts About the Ringed Gas Giant Planet

NOVA

Five Facts About the Ringed Gas Giant Planet

Learn more about Saturn, its rings, and moons.

Five Facts About the Ringed Gas Giant Planet

Video thumbnail: NOVA The Planets: Saturn Preview

NOVA

The Planets: Saturn Preview

NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.

The Planets: Saturn Preview

Video thumbnail: NOVA The Cassini Spacecraft's final moments

NOVA

The Cassini Spacecraft's final moments

Cassini plunges into Saturn, marking the end of its 13-year mission.

The Cassini Spacecraft's final moments

Video thumbnail: NOVA Five Facts About the Biggest Planet in our Solar System

NOVA

Five Facts About the Biggest Planet in our Solar System

Jupiter is more than the biggest planet in our solar system—it's also the oldest.

Five Facts About the Biggest Planet in our Solar System

Video thumbnail: NOVA The Planets: Jupiter Preview

NOVA

The Planets: Jupiter Preview

Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth

The Planets: Jupiter Preview

Video thumbnail: NOVA Jupiter, the First Planet to Form in our Solar System

NOVA

Jupiter, the First Planet to Form in our Solar System

Jupiter formed long before most other planets around it did.

Jupiter, the First Planet to Form in our Solar System

Video thumbnail: NOVA Five Facts About the Red Planet

NOVA

Five Facts About the Red Planet

Getting to know our red celestial neighbor.

Five Facts About the Red Planet

Video thumbnail: NOVA The Planets: Mars Preview

NOVA

The Planets: Mars Preview

Before it was a dry planet, Mars was a wet world that may have hosted life.

The Planets: Mars Preview

Video thumbnail: NOVA Mars, the Red Planet, Was Once Blue

NOVA

Mars, the Red Planet, Was Once Blue

Mars once had rains, rivers, and in the northern hemisphere, a vast sea.

Mars, the Red Planet, Was Once Blue

Video thumbnail: NOVA Five Facts About Our Home Planet

NOVA

Five Facts About Our Home Planet

Earth is the only known planet to harbor life.

Five Facts About Our Home Planet

Video thumbnail: NOVA The Planets: Inner Worlds Preview

NOVA

The Planets: Inner Worlds Preview

The rocky planets have similar origins, but only 1 supports life. Was it always this way?

The Planets: Inner Worlds Preview

Video thumbnail: NOVA Five Facts About Hot, Volcanic Venus

NOVA

Five Facts About Hot, Volcanic Venus

Our next door neighbor is most like Earth in terms of size and mass.

Five Facts About Hot, Volcanic Venus