Back to Show
Reactions
What's The Best Way To Whiten Teeth?
Season 3
Episode 20
It's with science, clearly. Many people have turned to over-the-counter teeth-whitening treatments. How do these work, and are they safe? This week, Reactions looks at the chemistry of a whiter smile.
Support Provided By

13:06
Why Alex is terrified of antibiotic resistance, and what chemists are doing about it

9:01
Are liquid, virtually fireproof, recyclable batteries the future of grid-scale storage?

11:39
Join George as he hunts for an antidote to deadly mushrooms.

12:15
George tests a newly discovered technique that could solve a recycling problem.

11:46
How does lime juice turn raw fish into delicious ceviche? We explain with biochemistry!

10:31
Forever Chemicals last… forever. Can a new technology finally send them to their doom?

8:21
Reducing the carbon footprint of concrete and cement by relying on biology.

9:13
Mosquitos really do prefer some people over others, and this Reactions ep explains why!

13:50
Discover the single most important chemical reaction on Earth, and why we need to kill it.

9:38
This week Reactions dives into something truly out-of-this-world: amorphous ice.

15:51
Are we about to re-define meat? If so, what is meat?!

11:48
How do carbon dioxide molecules trap heat in our atmosphere?