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The Science of Kissing

When you really think about it, kissing is an odd human behavior. You know, all the rubbing of our faces all over each other. So there must be a good reason why we do it, right? From motherly comforts to testing the genetic compatibility of your "mate" . . . the science of kissing is pretty awesome
Season 2 Episode 19 Length 05:25 Premiere: 02/10/14

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Season 2 Episodes

The Physics of Space Battles
S2 E55 Length 05:13 Premiere Date 10/22/14

How to See Time Travel!!!
S2 E54 Length 03:38 Premiere Date 10/20/14

Why Does The Earth Have Layers?
S2 E53 Length 04:31 Premiere Date 10/13/14

Why Do Clouds Stay Up?
S2 E52 Length 05:13 Premiere Date 10/06/14

A Slice of Pizza Science!
S2 E51 Length 03:32 Premiere Date 10/02/14

The Real "Doctor Frankenstein"
S2 E48 Length 06:12 Premiere Date 09/02/14

The Science of Goats!
S2 E47 Length 03:35 Premiere Date 08/27/14

Where Does the Smell of Rain Come From?
S2 E45 Length 02:39 Premiere Date 08/18/14

What If There Were No Sharks?
S2 E44 Length 04:33 Premiere Date 08/11/14

The Oldest Living Things In The World
S2 E43 Length 05:40 Premiere Date 08/04/14

Sunburn, Sweat and the Science of Summer!
S2 E42 Length 04:16 Premiere Date 07/28/14

The Sun Is A Magnet!
S2 E41 Length 01:36 Premiere Date 07/21/14

How Your Body Knows Left From Right
S2 E40 Length 04:30 Premiere Date 07/18/14

You Are An Upside-Down Lobster
S2 E39 Length 04:13 Premiere Date 07/16/14

Why Is Your Brain Is In Your Head
S2 E38 Length 04:12 Premiere Date 07/14/14

The Delicious Science of Cheese
S2 E37 Length 05:36 Premiere Date 07/07/14

Why Did We Blow On Nintendo Games?
S2 E36 Length 05:10 Premiere Date 06/30/14

Carbon and Oxygen and You: Explained
S2 E35 Length 01:28 Premiere Date 06/16/14

Why Does Time Go Forward?
S2 E34 Length 02:44 Premiere Date 06/09/14

The Science of BBQ!!!
S2 E33 Length 07:27 Premiere Date 06/02/14

The Science of Game of Thrones
S2 E31 Length 07:31 Premiere Date 05/19/14

Your Mom is LITERALLY Part Of You!
S2 E30 Length 02:55 Premiere Date 05/11/14

The Far Future of the Universe
S2 E29 Length 04:58 Premiere Date 05/07/14

Could We Clone Ourselves?
S2 E28 Length 05:31 Premiere Date 05/04/14

The Amazing Science of DUST?
S2 E27 Length 05:19 Premiere Date 04/14/14

Sonic the Hedgehog Is Why You Have Thumbs!
S2 E26 Length 06:08 Premiere Date 04/07/14

There Was No First Human
S2 E24 Length 03:44 Premiere Date 03/24/14

Science of Marathon Running
S2 E23 Length 07:17 Premiere Date 03/17/14

How The Elements Got Their Names
S2 E22 Length 03:31 Premiere Date 03/03/14

What Are The Most Important Science Images Ever?
S2 E21 Length 06:23 Premiere Date 02/25/14

When Science Fiction Becomes Science Fact
S2 E20 Length 07:36 Premiere Date 02/19/14

The Science of Kissing
S2 E19 Length 05:25 Premiere Date 02/10/14

The Scale of the Universe
S2 E18 Length 04:06 Premiere Date 02/03/14

How Science Defines A Year
S2 E17 Length 04:45 Premiere Date 01/27/14

Claude Monet Was Half Honeybee
S2 E16 Length 04:26 Premiere Date 01/20/14

The Science of Snowflakes
S2 E14 Length 05:34 Premiere Date 03/31/16

The Universe in a Glass of Wine (Richard Feynman Remixed)
S2 E13 Length 02:30 Premiere Date 12/30/13

Why Do We Cook?
S2 E12 Length 05:34 Premiere Date 12/23/13

How to Read Science News
S2 E11 Length 07:30 Premiere Date 12/19/13

Is There Intelligent Life Beyond Earth?
S2 E10 Length 07:51 Premiere Date 12/09/13

Exoplanets: Are There Other Earths?
S2 E9 Length 04:20 Premiere Date 12/02/13

Ghosts of Evolution
S2 E8 Length 04:30 Premiere Date 11/25/13

Do the Nobel Prizes Still Make Sense in the 21st Century?
S2 E6 Length 07:08 Premiere Date 11/04/13

Why Do Things Sound Scary?
S2 E5 Length 05:46 Premiere Date 10/28/13

Why Do We Go to Space?
S2 E4 Length 02:53 Premiere Date 09/23/13

There Are Millions of Skeletons Hidden In Washington, DC
S2 E3 Length 03:19 Premiere Date 09/09/13

Nature's Most Amazing Animal Superpowers
S2 E2 Length 08:05 Premiere Date 08/07/13

How Big is the Solar System?
S2 E1 Length 07:07 Premiere Date 07/15/13

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