Skip to Main Content

The "Holy Grail of Yogurt" is CRISPR

Bacteria use CRISPR to defend themselves from viruses. Here's how researchers have used it to benefit yogurt cultures since 2007.
Clip Season 47 Episode 11 Length 04:01 Premiere: 09/09/20

Sponsored by:

The words, "YOUNG WRITERS CONTEST" on a variegated colorful background along with a LEARN MORE button.The words, "YOUNG WRITERS CONTEST" on a variegated colorful background along with a LEARN MORE button.

Season 47 Episodes

Beyond the Elements: Life

S47 E19 Length 53:17 Premiere Date 02/17/21

Beyond the Elements: Indestructible

S47 E18 Length 53:17 Premiere Date 02/10/21

Beyond the Elements: Reactions

S47 E17 Length 53:17 Premiere Date 02/03/21

Can We Cool the Planet?

S47 E16 Length 53:31 Premiere Date 10/28/20

Touching the Asteroid

S47 E15 Length 53:32 Premiere Date 10/21/20

A to Z: How Writing Changed the World

S47 E14 Length 53:32 Premiere Date 09/30/20

A to Z: The First Alphabet

S47 E13 Length 54:02 Premiere Date 09/23/20

Secret Mind of Slime

S47 E12 Length 53:17 Premiere Date 09/16/20

Human Nature

S47 E11 Length 1:33:41 Premiere Date 09/09/20

Decoding COVID-19

S47 E10 Length 53:38 Premiere Date 05/13/20

Nature's Fear Factor

S47 E9 Length 53:21 Premiere Date 10/14/20

Saving Notre Dame

S47 E8 Length 53:52 Premiere Date 11/25/20

Eagle Power

S47 E7 Length 53:22 Premiere Date 05/20/20

The Truth About Fat

S47 E6 Length 53:33 Premiere Date 04/08/20

Cuba's Cancer Hope

S47 E5 Length 53:09 Premiere Date 04/01/20

Mysteries of Sleep

S47 E4 Length 53:26 Premiere Date 02/26/20

Cat Tales

S47 E3 Length 53:40 Premiere Date 02/19/20

Dog Tales

S47 E2 Length 54:11 Premiere Date 02/12/20

Polar Extremes

S47 E1 Length 1:52:42 Premiere Date 02/05/20

Human Nature Preview

Preview Length 00:28 Premiere Date 09/09/20

Human Nature Sneak Peek

Preview Length 02:08 Premiere Date 09/09/20

CRISPR Gene-Editing Reality Check

Clip Length 19:13 Premiere Date 09/04/20

Living with Sickle Cell Anemia

Clip Length 03:22 Premiere Date 09/09/20

How CRISPR Works in Nature

Clip Length 03:24 Premiere Date 05/13/20

The "Holy Grail of Yogurt" is CRISPR

Clip Length 04:01 Premiere Date 09/09/20

Antarctica: Journey to the Bottom of the Earth

Clip Length 14:11 Premiere Date 01/29/20

How Antarctica’s Cutest Baby Seals Grow Up

Clip Length 10:50 Premiere Date 02/05/20

Why is this Antarctic Glacier “Bleeding?”

Clip Length 10:00 Premiere Date 02/11/20

What is it Like to Live in Antarctica?

Clip Length 09:41 Premiere Date 02/26/20

Three Solutions That Can Slow or Stop Climate Change

Clip Length 04:21 Premiere Date 06/04/20

Cutting our Greenhouse Gas Emissions to Zero

Clip Length 04:52 Premiere Date 06/19/20

Can Geoengineering “Undo” Climate Change?

Clip Length 04:41 Premiere Date 06/24/20

See All Episodes

caret down

TV Schedules

Jump to Recent Airdates

Upcoming

Chinese Chariot Revealed

Premiered On: 05/17/2017

For over 1000 years, chariots thundered across China's battlefields - dominating warfare longer than anywhere else on earth. Now, archaeological findings enable a team of experts to reconstruct and test China's first super-weapon.

  • Thursday December 1, 2022 1:00 pm ET on KET
  • Thursday December 1, 2022 12:00 pm CT on KET

Deadliest Tornadoes

Premiered On: 04/11/2012

Explore the science behind the April 2011 tornadoes that left a trail of destruction across the US.

  • Monday December 5, 2022 3:00 am ET on KET2
  • Monday December 5, 2022 2:00 am CT on KET2
  • Tuesday December 6, 2022 12:00 am ET on KET2
  • Monday December 5, 2022 11:00 pm CT on KET2

Ghosts of Stonehenge

Premiered On: 10/11/2017

Who built Stonehenge, and why? Groundbreaking archaeological digs have revealed major new clues about Britain's enigmatic 5,000-year-old site and the people who constructed it.

  • Wednesday December 7, 2022 9:00 pm ET on KET
  • Wednesday December 7, 2022 8:00 pm CT on KET
  • Thursday December 8, 2022 1:00 pm ET on KET
  • Thursday December 8, 2022 12:00 pm CT on KET
  • Friday December 9, 2022 2:00 am ET on KET
  • Friday December 9, 2022 1:00 am CT on KET
  • Sunday December 11, 2022 7:00 pm ET on KET2
  • Sunday December 11, 2022 6:00 pm CT on KET2
  • Tuesday December 13, 2022 12:00 am ET on KET2
  • Monday December 12, 2022 11:00 pm CT on KET2
  • Tuesday December 13, 2022 5:00 am ET on KET2
  • Tuesday December 13, 2022 4:00 am CT on KET2

Rebuilding Notre Dame

Engineers, masons and timber workers work to restore Paris's iconic Notre Dame Cathedral.

  • Wednesday December 14, 2022 9:00 pm ET on KET
  • Wednesday December 14, 2022 8:00 pm CT on KET
  • Thursday December 15, 2022 1:00 pm ET on KET
  • Thursday December 15, 2022 12:00 pm CT on KET
  • Friday December 16, 2022 2:00 am ET on KET
  • Friday December 16, 2022 1:00 am CT on KET

Colosseum - Roman Death Trap

Premiered On: 02/11/2015

Archaeologists and engineers are teaming up to recreate a 25-foot lifting machine and trap door system capable of releasing a wolf into the Colosseum's arena for the first time in 1,500 years.

  • Sunday December 18, 2022 7:00 pm ET on KET2
  • Sunday December 18, 2022 6:00 pm CT on KET2
  • Tuesday December 20, 2022 12:00 am ET on KET2
  • Monday December 19, 2022 11:00 pm CT on KET2
  • Tuesday December 20, 2022 5:00 am ET on KET2
  • Tuesday December 20, 2022 4:00 am CT on KET2

Fighting for Fertility

Premiered On: 05/12/2021

What causes infertility, and how can assisted reproductive technologies help? Follow the journeys of people navigating fertility challenges from structural inequalities and racism to falling sperm counts, egg freezing and IVF.

  • Sunday December 25, 2022 7:00 pm ET on KET2
  • Sunday December 25, 2022 6:00 pm CT on KET2
  • Tuesday December 27, 2022 12:00 am ET on KET2
  • Monday December 26, 2022 11:00 pm CT on KET2
  • Tuesday December 27, 2022 5:00 am ET on KET2
  • Tuesday December 27, 2022 4:00 am CT on KET2

The Truth About Fat

Premiered On: 04/08/2020

Scientists are coming to understand fat as a system akin to an organ. Explore the mysteries of fat and its role in hormone production, hunger, and even pregnancy.

  • Wednesday December 28, 2022 9:00 pm ET on KET
  • Wednesday December 28, 2022 8:00 pm CT on KET
  • Thursday December 29, 2022 1:00 pm ET on KET
  • Thursday December 29, 2022 12:00 pm CT on KET
  • Friday December 30, 2022 2:00 am ET on KET
  • Friday December 30, 2022 1:00 am CT on KET
Jump to Upcoming Airdates

Recent

Ancient Maya Metropolis - S48 E22

  • Thursday November 24, 2022 1:00 pm ET on KET
  • Thursday November 24, 2022 12:00 pm CT on KET

Zero to Infinity - S49 E19

  • Wednesday November 23, 2022 8:00 am ET on KETWORLD
  • Wednesday November 23, 2022 7:00 am CT on KETWORLD
  • Wednesday November 23, 2022 12:00 am ET on KETWORLD
  • Tuesday November 22, 2022 11:00 pm CT on KETWORLD
  • Tuesday November 22, 2022 7:00 pm ET on KETWORLD
  • Tuesday November 22, 2022 6:00 pm CT on KETWORLD
  • Tuesday November 22, 2022 12:00 am ET on KET2
  • Monday November 21, 2022 11:00 pm CT on KET2
  • Sunday November 20, 2022 7:00 pm ET on KET2
  • Sunday November 20, 2022 6:00 pm CT on KET2
  • Sunday November 20, 2022 3:00 am ET on KET2
  • Sunday November 20, 2022 2:00 am CT on KET2
  • Friday November 18, 2022 2:00 am ET on KET
  • Friday November 18, 2022 1:00 am CT on KET
  • Thursday November 17, 2022 1:00 pm ET on KET
  • Thursday November 17, 2022 12:00 pm CT on KET
  • Wednesday November 16, 2022 9:00 pm ET on KET
  • Wednesday November 16, 2022 8:00 pm CT on KET

Crypto Decoded - S49 E18

  • Wednesday November 16, 2022 8:00 am ET on KETWORLD
  • Wednesday November 16, 2022 7:00 am CT on KETWORLD
  • Wednesday November 16, 2022 12:00 am ET on KETWORLD
  • Tuesday November 15, 2022 11:00 pm CT on KETWORLD
  • Tuesday November 15, 2022 7:00 pm ET on KETWORLD
  • Tuesday November 15, 2022 6:00 pm CT on KETWORLD
  • Tuesday November 15, 2022 12:00 am ET on KET2
  • Monday November 14, 2022 11:00 pm CT on KET2
  • Sunday November 13, 2022 7:00 pm ET on KET2
  • Sunday November 13, 2022 6:00 pm CT on KET2
  • Friday November 11, 2022 2:00 am ET on KET
  • Friday November 11, 2022 1:00 am CT on KET
  • Thursday November 10, 2022 1:00 pm ET on KET
  • Thursday November 10, 2022 12:00 pm CT on KET
  • Wednesday November 9, 2022 9:00 pm ET on KET
  • Wednesday November 9, 2022 8:00 pm CT on KET

Nazca Desert Mystery - S49 E17

  • Wednesday November 9, 2022 8:00 am ET on KETWORLD
  • Wednesday November 9, 2022 7:00 am CT on KETWORLD
  • Wednesday November 9, 2022 12:00 am ET on KETWORLD
  • Tuesday November 8, 2022 11:00 pm CT on KETWORLD
  • Tuesday November 8, 2022 7:00 pm ET on KETWORLD
  • Tuesday November 8, 2022 6:00 pm CT on KETWORLD
  • Tuesday November 8, 2022 12:00 am ET on KET2
  • Monday November 7, 2022 11:00 pm CT on KET2
  • Sunday November 6, 2022 7:00 pm ET on KET2
  • Sunday November 6, 2022 6:00 pm CT on KET2
  • Friday November 4, 2022 2:00 am ET on KET
  • Friday November 4, 2022 1:00 am CT on KET
  • Thursday November 3, 2022 1:00 pm ET on KET
  • Thursday November 3, 2022 12:00 pm CT on KET
  • Wednesday November 2, 2022 9:00 pm ET on KET
  • Wednesday November 2, 2022 8:00 pm CT on KET

Ocean Invaders - S49 E16

  • Wednesday November 2, 2022 8:00 am ET on KETWORLD
  • Wednesday November 2, 2022 7:00 am CT on KETWORLD
  • Wednesday November 2, 2022 12:00 am ET on KETWORLD
  • Tuesday November 1, 2022 11:00 pm CT on KETWORLD
  • Tuesday November 1, 2022 7:00 pm ET on KETWORLD
  • Tuesday November 1, 2022 6:00 pm CT on KETWORLD
  • Tuesday November 1, 2022 12:00 am ET on KET2
  • Monday October 31, 2022 11:00 pm CT on KET2
  • Sunday October 30, 2022 7:00 pm ET on KET2
  • Sunday October 30, 2022 6:00 pm CT on KET2
  • Friday October 28, 2022 2:00 am ET on KET
  • Friday October 28, 2022 1:00 am CT on KET
  • Thursday October 27, 2022 1:00 pm ET on KET
  • Thursday October 27, 2022 12:00 pm CT on KET
Top

Explore KET