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How Does Anesthesia Work?

How Does Anesthesia Work?

Season 3 Episode 42
3:23
Have We Found All The Elements?

Have We Found All The Elements?

Season 3 Episode 43
5:19
How Much Candy Would Kill You?

How Much Candy Would Kill You?

Season 3 Episode 44
3:32
The Science of Distance Running

The Science of Distance Running

Season 3 Episode 45
4:23
What's the Deal with Acne?

What's the Deal with Acne?

Season 3 Episode 46
3:56
Can I Still Eat This?

Can I Still Eat This?

Season 3 Episode 48
4:19
Gum + Chocolate = ?????

Gum + Chocolate = ?????

Season 3 Episode 49
2:10
You Can Taste Garlic with Your Feet!?

You Can Taste Garlic with Your Feet!?

Season 3 Episode 50
2:36
How To Get Rid of Beer Foam Fast

How To Get Rid of Beer Foam Fast

Season 3 Episode 51
1:35
The Cold Truth About Fat

The Cold Truth About Fat

Season 3 Episode 53
3:00
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Reactions

What Causes PMS?

Season 3 Episode 41

The science of PMS helps to create a grab bag of unpleasant physical and psychological symptoms, PMS can be much more than an annoyance. Reactions looks at how hormones including estrogen and progesterone interact with secondary chemicals, which can lead to symptoms of PMS.