Skip to main content

Up Next

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
Back to Show
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.

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
Season
How is Ceviche "Cooked?"
11:46
How does lime juice turn raw fish into delicious ceviche? We explain with biochemistry!
Burning Forever Chemicals With Water
10:31
Forever Chemicals last… forever. Can a new technology finally send them to their doom?
The Bioconcrete Revolution (maybe)
8:21
Reducing the carbon footprint of concrete and cement by relying on biology.
Why are Mosquitos So Obsessed with Me?
9:13
Mosquitos really do prefer some people over others, and this Reactions ep explains why!
The End of Haber Bosch
13:50
Discover the single most important chemical reaction on Earth, and why we need to kill it.
What is Amorphous Ice?
9:38
This week Reactions dives into something truly out-of-this-world: amorphous ice.
Lab-grown, Plant-based, Real – What Is The Chemistry Of Meat
15:51
Are we about to re-define meat? If so, what is meat?!
But HOW Does Carbon Dioxide Trap Heat?
11:48
How do carbon dioxide molecules trap heat in our atmosphere?
EU’s Ban On Tattoo Ink: Breaking Down the Chemistry
10:37
Why has the European Union banned certain colors for tattoos?
Why Are Electric Vehicle Fires So Hard To Put Out?
12:29
Can we solve electric vehicle fires before we fully understand what’s happening?
How a Chemist Makes the Softest Bread You'll Ever Eat
15:58
Fluffy, delicious bread results when starch gelatinization and flour chemistry combine!
Why Calcium Hydroxide + Corn is Key to Understanding Western
12:35
Join George (and, occasionally, Andrew) as they chart corn’s epic chemical journey.
Active loading indicator