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Why Going to Mars Would Totally Suck

Can't wait to get into outer space? Well there's a bit you need to know first... Spending time in zero gravity can have some pretty extreme effects on the human body. Still scientists are already making plans for long trips to other planets, but first we have to start with a few experiments here on Earth — and it all starts with astronaut Scott Kelly spending one full year in orbit.
Season 4 Episode 22 Length 08:26 Premiere: 02/29/16

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Specials

Season 4 Episodes

Engines of Destruction: How Hurricanes Work
S4 E90 Length 06:02 Premiere Date 08/15/16

How An Igloo Keeps You Warm
S4 E60 Length 05:04 Premiere Date 01/09/17

23 Reasons to be Cheerful (Thanks to Science!)
S4 E59 Length 04:53 Premiere Date 12/28/16

This Land Is Your Land - Project For Awesome 2016
S4 E58 Length 04:11 Premiere Date 12/09/16

Pigeon Story: How the Rock Dove Became the Sky Rat
S4 E57 Length 05:50 Premiere Date 12/07/16

Why Don’t Woodpeckers Get Concussions?
S4 E56 Length 06:07 Premiere Date 11/28/16

The Surprising Origin of Thanksgiving Foods
S4 E55 Length 05:09 Premiere Date 11/14/16

Asteroids, Meteors, and Comets… OH MY!!!
S4 E54 Length 07:09 Premiere Date 11/07/16

We Got Ants In Our Plants!
S4 E53 Length 06:05 Premiere Date 11/01/16

How Baby Sea Turtles Find Their Way Home
S4 E52 Length 06:10 Premiere Date 10/17/16

Is Sugar A Drug?
S4 E51 Length 05:35 Premiere Date 10/10/16

This Rainforest Caterpillar Looks Like Donald Trump
S4 E50 Length 05:01 Premiere Date 10/03/16

Why Don't Ants Get Stuck in Traffic
S4 E49 Length 06:03 Premiere Date 09/26/16

Why Do More Species Live Near The Equator?
S4 E48 Length 06:37 Premiere Date 09/19/16

What’s REALLY Warming the Earth?
S4 E46 Length 05:30 Premiere Date 08/29/16

Do Plants Think?
S4 E45 Length 05:26 Premiere Date 08/23/16

Why Hurricanes Are Earth's Most Powerful Storms
S4 E44 Length 06:34 Premiere Date 08/15/16

The Invisible Creatures That Keep You Alive!
S4 E43 Length 05:23 Premiere Date 08/08/16

Why Are Some Animals Venomous?
S4 E42 Length 05:08 Premiere Date 08/01/16

Could You Really Survive Being Shrunk?!
S4 E41 Length 04:44 Premiere Date 07/26/16

Attack of the Cosmic Space Junk!
S4 E40 Length 05:14 Premiere Date 07/18/16

Why Salt & Pepper?
S4 E39 Length 05:23 Premiere Date 07/11/16

Why Don't Other Animals Wear Glasses?
S4 E38 Length 05:03 Premiere Date 06/27/16

Where Did Zika Come From?
S4 E37 Length 05:45 Premiere Date 06/20/16

Musical Tesla Coils in Slow Motion! Featuring Physics Girl
S4 E36 Length 06:46 Premiere Date 06/14/16

Spit: Everything You Never Wanted To Know
S4 E35 Length 04:41 Premiere Date 06/06/16

How These Ants Took Over the U.S
S4 E34 Length 06:32 Premiere Date 05/30/16

Is Your Brain Too Old For Video Games?
S4 E33 Length 06:25 Premiere Date 05/23/16

6 Chemical Reactions That Changed History
S4 E32 Length 07:18 Premiere Date 05/17/16

The Cosmic Afterglow
S4 E31 Length 03:27 Premiere Date 05/09/16

The Most Important Moment in the History of Life
S4 E30 Length 06:13 Premiere Date 05/02/16

Why Are You Multicellular?
S4 E29 Length 04:41 Premiere Date 04/25/16

Are You Smarter Than A Slime Mold?
S4 E28 Length 04:39 Premiere Date 04/19/16

Is Epigenetic Inheritance Real?
S4 E27 Length 04:51 Premiere Date 04/04/16

How Do Bees Make Honey?
S4 E26 Length 05:15 Premiere Date 03/28/16

How Many Trees Are There?
S4 E25 Length 04:15 Premiere Date 03/21/16

The Equinox Isn't What You Think It Is
S4 E24 Length 02:11 Premiere Date 03/16/16

Einstein Was Right: Gravitational Waves Edition
S4 E23 Length 06:07 Premiere Date 03/07/16

Why Going to Mars Would Totally Suck
S4 E22 Length 08:26 Premiere Date 02/29/16

How Do Squirrels Find Their Nuts?
S4 E21 Length 02:08 Premiere Date 02/25/16

Is Big Data Getting Too Big?
S4 E20 Length 04:28 Premiere Date 02/16/16

100,000,000 Years From Now
S4 E19 Length 05:28 Premiere Date 02/08/16

Why Seasons Make No Sense
S4 E18 Length 03:01 Premiere Date 02/01/16

This Is Not a Rainbow
S4 E17 Length 03:17 Premiere Date 01/25/16

Who Shares Your Birthday?
S4 E16 Length 05:16 Premiere Date 01/18/16

Could Bigfoot REALLY Exist?
S4 E15 Length 06:36 Premiere Date 01/13/16

Does Evolution Have a Point? 12 Days of Evolution #12
S4 E14 Length 02:51 Premiere Date 12/24/15

Are Humans Still Evolving? 12 Days of Evolution #11
S4 E13 Length 01:27 Premiere Date 12/23/15

Why Are There Still Monkeys? - 12 Days of Evolution #10
S4 E12 Length 01:25 Premiere Date 12/22/15

Can Evolution Create Information? - 12 Days of Evolution #9
S4 E11 Length 01:28 Premiere Date 12/21/15

Does Evolution Violate Thermodynamics?
S4 E10 Length 02:09 Premiere Date 12/21/15

Why Do Men Have Nipples? - 12 Days of Evolution #7
S4 E9 Length 01:31 Premiere Date 12/20/15

Evolution Is Dumb - 12 Days of Evolution #6
S4 E8 Length 01:25 Premiere Date 12/19/15

Have We Seen A New Species? - 12 Days of Evolution #5
S4 E7 Length 02:05 Premiere Date 12/18/15

Can Evolution Make an Eye? - 12 Days of Evolution #4
S4 E6 Length 01:47 Premiere Date 12/15/15

Have We Ever Seen Evolution Happen - 12 Days of Evolution #3
S4 E5 Length 01:52 Premiere Date 12/15/15

Is Evolution Random? - 12 Days of Evolution #2
S4 E4 Length 01:17 Premiere Date 12/15/15

What Is Evolution, Anyway? - 12 Days of Evolution #1
S4 E3 Length 01:25 Premiere Date 12/14/15

Could Planet Minecraft Actually Exist?
S4 E2 Length 04:47 Premiere Date 11/30/15

Can Coral Reefs Survive Climate Change? #OursToLose
S4 E1 Length 05:05 Premiere Date 11/23/15

Musical Tesla Coils in Slow Motion! Featuring Physics Girl
Preview Length 06:20 Premiere Date 06/14/16

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