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Human Nature

With an extraordinary new technology called CRISPR, we can now edit DNA—including human DNA. But how far should we go? Gene-editing promises to eliminate certain genetic disorders like sickle cell disease. But the applications quickly raise ethical questions. Is it wrong to engineer soldiers to feel no pain, or to resurrect an extinct species?
S47 E11 Length 1:33:41 Premiere: 9.9.20

Program Details

NOVA

About NOVA

NOVA brings you stories from the frontlines of science and engineering, answering the big questions of today and tomorrow, from how our ancestors lived, to whether parallel universes exist, to how technology will transform our lives. Visit the official website to watch full-length documentaries, or explore our world through short-form video, on our digital publication NOVA Next.

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Saving Notre Dame - S47 E8

Engineers and scientists are racing to protect and ultimately rebuild France's Notre Dame cathedral.

  • Tuesday December 7, 2021 3:00 am ET on KET2
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Rise of the Mammals - S46 E17

A new trove of fossils reveals how mammals took over after an asteroid wiped out the dinosaurs 66 million years ago.

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Decoding da Vinci - S46 E21

Discover how Leonardo da Vinci used science, from human dissections to innovative painting techniques, to create his legendary artwork. Learn why Mona Lisa's smile is so captivating - and what it took to create it.

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Decoding the Great Pyramid - S46 E4

New archaeological evidence provides clues about the Egyptians who built the Great Pyramid of Giza - and how they did it.

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Secrets of the Forbidden City - S44 E15

Explore the ingenious engineering of Beijing's Forbidden City, the power center of imperial China.

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Saving Notre Dame - S47 E8

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NOVA Universe Revealed: Big Bang - S48 E19

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NOVA Universe Revealed: Black Holes - S48 E18

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NOVA Universe Revealed: Alien Worlds - S48 E17

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NOVA Universe Revealed: Milky Way - S48 E16

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NOVA Universe Revealed: Age of Stars - S48 E15

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Top

Season 47 Episodes

CRISPR Gene-Editing Reality Check

S47 E111 Length 19:13 Premiere Date 9.4.20

Beyond the Elements: Life

S47 E19 Length 53:17 Premiere Date 2.17.21

Beyond the Elements: Indestructible

S47 E18 Length 53:17 Premiere Date 2.10.21

Beyond the Elements: Reactions

S47 E17 Length 53:17 Premiere Date 2.3.21

Can We Cool the Planet?

S47 E16 Length 53:31 Premiere Date 10.28.20

Touching the Asteroid

S47 E15 Length 54:03 Premiere Date 10.21.20

A to Z: How Writing Changed the World

S47 E14 Length 53:31 Premiere Date 9.30.20

A to Z: The First Alphabet

S47 E13 Length 54:01 Premiere Date 9.23.20

Secret Mind of Slime

S47 E12 Length 53:17 Premiere Date 9.16.20

Human Nature

S47 E11 Length 1:33:41 Premiere Date 9.9.20

Decoding COVID-19

S47 E10 Length 53:38 Premiere Date 5.13.20

Nature's Fear Factor

S47 E9 Length 53:32 Premiere Date 10.14.20

Saving Notre Dame

S47 E8 Length 53:52 Premiere Date 11.25.20

Eagle Power

S47 E7 Length 53:40 Premiere Date 5.20.20

The Truth About Fat

S47 E6 Length 53:38 Premiere Date 4.8.20

Cuba's Cancer Hope

S47 E5 Length 53:09 Premiere Date 4.1.20

Mysteries of Sleep

S47 E4 Length 53:14 Premiere Date 2.26.20

Cat Tales

S47 E3 Length 53:40 Premiere Date 2.19.20

Dog Tales

S47 E2 Length 54:11 Premiere Date 2.12.20

Polar Extremes

S47 E1 Length 1:53:06 Premiere Date 2.5.20

Human Nature Preview

Preview Length 00:28 Premiere Date 9.9.20

Human Nature Sneak Peek

Preview Length 02:08 Premiere Date 9.9.20

Living with Sickle Cell Anemia

Clip Length 03:22 Premiere Date 9.9.20

How CRISPR Works in Nature

Clip Length 03:24 Premiere Date 5.13.20

The "Holy Grail of Yogurt" is CRISPR

Clip Length 04:01 Premiere Date 9.9.20

Antarctica: Journey to the Bottom of the Earth

Clip Length 14:11 Premiere Date 1.29.20

How Antarctica’s Cutest Baby Seals Grow Up

Clip Length 10:50 Premiere Date 2.5.20

Why is this Antarctic Glacier “Bleeding?”

Clip Length 10:00 Premiere Date 2.11.20

What is it Like to Live in Antarctica?

Clip Length 09:41 Premiere Date 2.26.20

Three Solutions That Can Slow or Stop Climate Change

Clip Length 04:21 Premiere Date 6.4.20

Cutting our Greenhouse Gas Emissions to Zero

Clip Length 04:52 Premiere Date 6.19.20

Can Geoengineering “Undo” Climate Change?

Clip Length 04:41 Premiere Date 6.24.20

How Communities Can Adapt to Climate Change

Clip Length 03:59 Premiere Date 6.29.20

Specials

Picture a Scientist (with Audio Description)

Length 1:52:37 Premiere Date 4.14.21

Looking for Life on Mars (with Audio Description)

Length 53:46 Premiere Date 2.24.21

Beyond the Elements: Life (with Audio Description)

Length 53:17 Premiere Date 2.17.21

Secrets in our DNA (with Audio Description)

Length 53:26 Premiere Date 1.13.21

Treasures Metals Eiffel Tower

Length 02:09 Premiere Date 12.9.16

A Labyrinth of Lava

Length 01:13 Premiere Date 11.2.15

No Dinosaurs Above the Line

Length 02:00 Premiere Date 10.22.15

Mammal Survivors

Length 01:40 Premiere Date 10.22.15

Dinosaur Fossils

Length 01:53 Premiere Date 10.22.15

King of Gore

Length 02:00 Premiere Date 10.22.15

Driving Dinosaur Diversity

Length 01:47 Premiere Date 10.22.15

Pangea

Length 00:56 Premiere Date 10.22.15

Making Granite From Volcanic Rock

Length 02:16 Premiere Date 10.22.15

A Massive Volcanic Eruption

Length 01:14 Premiere Date 10.22.15

From Mud to Rock

Length 01:36 Premiere Date 10.22.15

Finding Stromatolites

Length 01:23 Premiere Date 10.22.15

Stromatolites Were Kings

Length 01:05 Premiere Date 10.22.15

Ancient Life

Length 00:28 Premiere Date 10.22.15

Millions of Years Captured in Chalk

Length 01:17 Premiere Date 10.22.15

A Fourteen-Foot Fish From Kansas

Length 01:38 Premiere Date 10.22.15

Hell Creek Formation

Length 01:10 Premiere Date 10.22.15

Fossilized Sand Dunes

Length 01:15 Premiere Date 10.21.15

Volcanoes of Sand

Length 01:33 Premiere Date 10.21.15

Rockies 2.0

Length 02:00 Premiere Date 10.21.15

Manhattan Schist

Length 01:13 Premiere Date 10.21.15

Manhattan Skyline

Length 00:52 Premiere Date 10.21.15

New York's Mountains

Length 01:13 Premiere Date 10.21.15

Rock Time Capsules

Length 01:18 Premiere Date 10.21.15

The Sandstone Top of the Canyon

Length 01:15 Premiere Date 10.21.15

Fossil-Filled Limestone

Length 00:54 Premiere Date 10.21.15

The Grand Canyon's Oldest Rocks

Length 00:19 Premiere Date 10.21.15

From Lava to Land

Length 02:14 Premiere Date 10.21.15

Semi-Precious Pebbles

Length 00:57 Premiere Date 10.21.15

Five Steps of Volcanic Rock

Length 00:26 Premiere Date 10.21.15

Tearing North America Apart

Length 01:01 Premiere Date 10.21.15

Mount Kilauea

Length 01:30 Premiere Date 8.2.15

Grand Canyon 1

Length 01:19 Premiere Date 8.2.15

Grand Canyon 2

Length 01:05 Premiere Date 8.2.15

Grand Canyon 3

Length 00:58 Premiere Date 8.2.15

Grand Canyon 4

Length 00:19 Premiere Date 8.2.15

Mendenhall Glacier

Length 02:51 Premiere Date 8.2.15

Monument Rocks 1

Length 01:18 Premiere Date 8.2.15

Monument Rocks 2

Length 01:48 Premiere Date 8.2.15

Exuma Cays 1

Length 01:26 Premiere Date 8.2.15

Exuma Cays 3

Length 00:28 Premiere Date 8.2.15

Exuma Cays 4

Length 03:22 Premiere Date 8.2.15

Gooseberry Falls 1

Length 00:57 Premiere Date 8.2.15

Gooseberry Falls 2

Length 00:24 Premiere Date 8.2.15

Gooseberry Falls 3

Length 01:06 Premiere Date 8.2.15

Gooseberry Falls 4

Length 01:01 Premiere Date 8.2.15

Lethal Seas Excerpt 1

Length 04:11 Premiere Date 5.12.15

Lethal Seas Excerpt 2

Length 01:00 Premiere Date 5.12.15

Lethal Seas Excerpt 3

Length 00:35 Premiere Date 5.12.15

Lethal Seas Excerpt 4

Length 00:51 Premiere Date 5.12.15

The Mother of Hubble

Length 02:28 Premiere Date 4.14.15

Formation of a Typhoon

Length 01:34 Premiere Date 6.25.14

Flatfish Larvae

Length 00:51 Premiere Date 5.6.14

RNAi Explained

Length 01:47 Premiere Date 4.22.14

Dolphin Mirror

Length 03:18 Premiere Date 4.22.14

Dogs' Sense of Time

Length 01:28 Premiere Date 4.13.14

Cockatoo Excerpt

Length 01:30 Premiere Date 4.8.14

How Solar Cells Work

Length 00:33 Premiere Date 2.26.14

Solar Power's Promise

Length 00:51 Premiere Date 2.26.14

Microneedle

Length 01:41 Premiere Date 12.30.13

GM Plants

Length 01:27 Premiere Date 11.15.13

Non-Newtonian Gel

Length 01:00 Premiere Date 11.15.13

Soft-Story Buildings

Length 07:36 Premiere Date 11.13.13

Levitation

Length 00:50 Premiere Date 10.24.13

Superconductor

Length 01:47 Premiere Date 10.24.13

Animal Robot 1

Length 02:35 Premiere Date 10.24.13

Animal Robot 2

Length 02:02 Premiere Date 10.24.13

Therapeutic Hypothermia

Length 01:11 Premiere Date 10.24.13

Therapeutic Hypothermia 2

Length 01:07 Premiere Date 10.24.13

Therapeutic Hypothermia 3

Length 01:43 Premiere Date 10.24.13

Therapeutic Hypothermia 4

Length 02:01 Premiere Date 10.24.13

Swarming Robots

Length 01:31 Premiere Date 10.21.13

Sneak Peek: Making Stuff Wilder

Length 06:14 Premiere Date 10.21.13

Virus Battery

Length 02:21 Premiere Date 10.19.13

Shelley

Length 02:07 Premiere Date 10.19.13

Robot Arm

Length 00:56 Premiere Date 10.19.13

Elephant Arm

Length 01:22 Premiere Date 10.19.13

FinGripper

Length 00:55 Premiere Date 10.19.13

Sail Wing

Length 01:02 Premiere Date 10.19.13

Hydrofoil

Length 01:01 Premiere Date 10.19.13

Chicken Feathers

Length 01:56 Premiere Date 10.19.13

KillaCycle

Length 00:48 Premiere Date 10.19.13

How Batteries Work

Length 00:49 Premiere Date 10.19.13

Muon Detection

Length 01:52 Premiere Date 10.19.13

Muons

Length 01:25 Premiere Date 10.19.13

Plants White

Length 02:11 Premiere Date 10.19.13

DNA Patch

Length 01:19 Premiere Date 10.19.13

DNA Vaccine

Length 00:38 Premiere Date 10.19.13

Earthquake Test

Length 02:03 Premiere Date 10.19.13

David Drives

Length 01:27 Premiere Date 10.19.13

Pitcher Plant

Length 01:48 Premiere Date 10.17.13

SLIPS

Length 01:01 Premiere Date 10.17.13

Hagfish

Length 00:51 Premiere Date 10.17.13

Hagfish Defense

Length 01:36 Premiere Date 10.17.13

Slime Clothes

Length 01:00 Premiere Date 10.17.13

New York City One Year Later: Telecommunications

Length 03:14 Premiere Date 10.16.13

Sneak Peek: Making Stuff Faster

Length 05:06 Premiere Date 10.15.13

David's Race

Length 01:28 Premiere Date 10.15.13

Steffen's Plan

Length 01:59 Premiere Date 10.15.13

Traveling Salesman

Length 01:21 Premiere Date 10.15.13

Eye Robot

Length 01:51 Premiere Date 10.10.13

Corkscrew Robot

Length 00:32 Premiere Date 10.10.13

Slow Goldfish

Length 01:39 Premiere Date 10.10.13

Bee Toxin

Length 01:31 Premiere Date 10.10.13

Mild Traumatic Brain Injury

Length 03:36 Premiere Date 10.7.13

Invisibility Cloak

Length 01:22 Premiere Date 9.24.13

Shape Memory Alloys

Length 00:32 Premiere Date 9.8.13

Jellyfish

Length 00:38 Premiere Date 9.8.13

Bird Wings

Length 01:56 Premiere Date 9.8.13

Shrinking Chips

Length 01:06 Premiere Date 9.5.13

Pizza Transistor

Length 01:34 Premiere Date 9.5.13

Graphene

Length 01:11 Premiere Date 9.5.13

Wheat Straw Plastic

Length 01:04 Premiere Date 8.29.13

Solar Leaves

Length 00:53 Premiere Date 8.29.13

Battle Jacket

Length 01:49 Premiere Date 8.29.13

Oobleck

Length 00:40 Premiere Date 8.29.13

Magnetic Oobleck

Length 00:54 Premiere Date 8.29.13

Life-Saving Non-Newtonian Fluids

Length 01:43 Premiere Date 8.29.13

Silicon Transistors

Length 00:50 Premiere Date 8.29.13

Starling 8

Length 00:44 Premiere Date 7.15.13

sandy-raw-5-1

Length 01:02 Premiere Date 7.8.13

sandy-raw-1-2

Length 00:04 Premiere Date 7.8.13

Chemotherapy Goes Small

Length 01:17 Premiere Date 7.1.13

The Making of a Cloud Old

Length 03:10 Premiere Date 6.30.13

Why So Many Cloud Types?

Length 03:35 Premiere Date 6.30.13

Clouds and Weather

Length 03:21 Premiere Date 6.30.13

Severe Storms

Length 03:37 Premiere Date 6.30.13

The Climate Wild Card

Length 03:02 Premiere Date 6.30.13

Life on Europa?

Length 02:25 Premiere Date 6.9.13

CloudLab_Megastorm_07

Length 03:07 Premiere Date 5.29.13

CloudLab_Megastorm_03

Length 01:41 Premiere Date 5.29.13

CloudLab_Megastorm_04

Length 01:43 Premiere Date 5.29.13

CloudLab_Megastorm_05

Length 01:04 Premiere Date 5.29.13

CloudLab_Megastorm_06

Length 00:40 Premiere Date 5.29.13

CloudLab_Megastorm_01

Length 00:35 Premiere Date 5.28.13

CloudLab_Megastorm_02

Length 00:31 Premiere Date 5.28.13

What Made the 1918 Flu So Deadly?

Length 01:28 Premiere Date 5.13.13

How the 1918 Flu Infected People

Length 00:25 Premiere Date 5.13.13

Fertilizing the Amazon

Length 03:27 Premiere Date 4.21.13

Flu Probabilities

Length 01:53 Premiere Date 4.16.13

Rare Earth Elements

Length 04:17 Premiere Date 4.1.13

CHNOPS: Ingredients for Life

Length 02:36 Premiere Date 3.12.13

Electromagnetic Spectrum

Length 00:44 Premiere Date 2.28.13

MODIS Sensor

Length 00:26 Premiere Date 2.28.13

Solving the Storage Problem

Length 02:26 Premiere Date 10.25.12

Putting Energy to Use Old

Length 02:14 Premiere Date 10.8.12

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