Skip to main content

Up Next

How Plastic Recycling Actually Works

How Plastic Recycling Actually Works

Season 5 Episode 31
3:01
What are Eye Boogers?

What are Eye Boogers?

Season 5 Episode 33
1:47
What is Natto?

What is Natto?

Season 5 Episode 35
4:46
Tardigrades

Tardigrades

Season 5 Episode 37
3:12
How Do You Catch Fruit Flies?

How Do You Catch Fruit Flies?

Season 5 Episode 38
3:16
Do Astronauts Need Sunscreen?

Do Astronauts Need Sunscreen?

Season 5 Episode 39
5:03
How is Leather Made?

How is Leather Made?

Season 5 Episode 41
4:03
Why Does Humidity Feel Gross?

Why Does Humidity Feel Gross?

Season 5 Episode 42
4:55
Back to Show
Reactions

Can You Take Expired Drugs?

Season 5 Episode 30

Every medicine you buy has an expiration date printed on it somewhere, but does it actually go bad? This week on Reactions, we explain the chemistry of drug expiration dates.

Support Provided By
Season
Can Plastic Be Composted?
4:33
Can Plastic Be Composted?
How Does Low-Dose Aspirin Work?
4:27
How Does Low-Dose Aspirin Work?
What Makes Kimchi So Delicious?
4:39
What makes kimchi sour and spicy, yet also surprisingly rich and buttery?
Is Santa's Flame Resistant Suit Killing Him?
3:53
Flame-retardant chemicals can slow the spread of fire in homes and garments.
Why Don’t Antarctic Fish Freeze to Death?
4:11
Fish living in the oceans around Antarctica seem like they should freeze to death.
Why Does Humidity Feel Gross?
4:55
Why Does Humidity Feel Gross?
How is Leather Made?
4:03
How does animal hide become leather?
Fact or Fiction: Uncooked Rice is Bad for Birds
4:30
Throwing rice at weddings won't hurt birds--and we can prove it with chemistry.
Do Astronauts Need Sunscreen?
5:03
How do astronauts survive the deadly radiation of deep space?
How Do You Catch Fruit Flies?
3:16
The chemistry behind why fruit flies love vinegar so much.
Tardigrades
3:12
The humble tardigrade can be found practically anywhere.
Turning the Boston Harbor into Actual Tea
4:10
How Much Tea Would it Take to Turn the Boston Harbor into Tea?
Active loading indicator