Nova

1Season 48

S48.E1 ∙ Secrets in Our DNA

Wed, Jan 13, 2021

What can DNA testing companies reveal about our ancestry and health, and at what risk?

2Season 48

S48.E2 ∙ Beyond the Elements: Reactions

Wed, Feb 3, 2021

The chemical reactions that transform the world, from explosions to photosynthesis.

3Season 48

S48.E3 ∙ Beyond the Elements: Indestructible

Wed, Feb 10, 2021

The potential environmental impact of virtually indestructible versions of glass, rubber and plastic.

4Season 48

S48.E4 ∙ Beyond the Elements: Life

Wed, Feb 17, 2021

The molecules that allowed life on Earth to begin and thrive; how scientists use evolution in chemistry.

5Season 48

S48.E5 ∙ Looking for Life on Mars

Wed, Feb 24, 2021

Follow along as NASA launches the Mars 2020 mission, perhaps the most ambitious hunt yet for signs of ancient life on Mars.

6Season 48

S48.E6 ∙ Picture a Scientist

Wed, Apr 14, 2021

Women make up less than one-quarter of the amount of people employed in STEM, and the number is even smaller for women of color.

7Season 48

S48.E7 ∙ Reef Rescue

Wed, Apr 21, 2021

Marine biologists from the Bahamas to Christmas Island to Australia fight against the clock to save the coral reefs from extinction.

8Season 48

S48.E8 ∙ Fighting for Fertility

Wed, May 12, 2021

Explores barriers to fertility, from the social to the biological, and the state of assisted reproductive technologies.

9Season 48

S48.E9 ∙ Hindenburg: The New Evidence

Wed, May 19, 2021

80 years after the world's largest airship ignited in a giant fireball, newly discovered footage sparks a re-investigation of what exactly caused the Hindenburg disaster.

10Season 48

S48.E10 ∙ Great Electric Airplane Race

Wed, May 26, 2021

The race to develop a practical and economically-viable electrically-powered airplane.

11Season 48

S48.E11 ∙ Ship That Changed the World

Wed, Jun 2, 2021

A newly discovered 500-year-old wreck offers vital clues to the evolution in ship design that made long-distance voyages practical.

12Season 48

S48.E12 ∙ Bat Superpowers

Wed, Sep 15, 2021

Understanding bats, their long life spans and why they are resistant to the very diseases they carry such as Ebola and MERS, as well as other diseases like cancer.

13Season 48

S48.E13 ∙ The Cannabis Question

Wed, Sep 29, 2021

As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.

14Season 48

S48.E14 ∙ Particles Unknown

Wed, Oct 6, 2021

An international team studies the neutrino, the most common yet least understood particle in the universe.

15Season 48

S48.E15 ∙ Arctic Drift

Wed, Oct 13, 2021

Scientists on a daring polar voyage to uncover the Arctic's climate secrets.

16Season 48

S48.E16 ∙ Edible Insects

Wed, Oct 20, 2021

Takes a tasty look at insect foods that could benefit our health and our warming planet.

17Season 48

S48.E17 ∙ Universe Revealed: Age of Stars

Wed, Oct 27, 2021

The Hubble Space Telescope and a heat-resistant solar probe reveal new clues about the sun's 5-billion-year history.

18Season 48

S48.E18 ∙ Universe Revealed: Milky Way

Wed, Nov 3, 2021

The Milky Way reminds us of our place in the galaxy we call home. But what shaped this giant spiral of stars and what will be its destiny? NOVA travels back in time to unlock the turbulent story of our cosmic neighborhood.

19Season 48

S48.E19 ∙ Universe Revealed: Alien Worlds

Wed, Nov 10, 2021

New science and discoveries made possible by ultra sensitive telescopes and detective work transform the search for alien planets from science fiction into fact.

20Season 48

S48.E20 ∙ Universe Revealed: Black Holes

Wed, Nov 17, 2021

Discover new science showing how black holes reshape entire galaxies, warp the fabric of space and time, and might even be portals to another universe.

21Season 48

S48.E21 ∙ Universe Revealed: Big Bang

Wed, Nov 24, 2021

New research and theories offer clues about the Big Bang and what may have existed before the universe's birth.

22Season 48

S48.E22 ∙ High-Risk High-Rise

Wed, Jan 5, 2022

The science behind the risks of sky-high buildings, from structural limits to threats presented by wind, fire and earthquakes.

23Season 48

S48.E23 ∙ Butterfly Blueprints

Wed, Jan 12, 2022

Scientists are discovering the secrets of butterflies and using that knowledge to improve technology.

24Season 48

S48.E24 ∙ Alaskan Dinosaurs

Wed, Jan 19, 2022

Paleontologists discover that dinosaurs thrived in unlikely places such as the cold and dark Arctic Circle.

25Season 48

S48.E25 ∙ Ancient Maya Metropolis

Wed, Jan 26, 2022

Why did the ancient Maya abandon their major cities?

101Season 48

S48.E101 ∙ Search Engine Breakdown

Wed, Apr 14, 2021

Two leading researchers investigate racial bias built into widely used search engines.