Up Next
Back to Show
Reactions
What's That After-Rain Smell Made Of?
Season 5
Episode 11
There’s a sweet smell in the air after it rains, whether it’s a spring shower or a summer storm. This week on Reactions, we explain the chemistry of petrichor, the smell of rain.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
11:30
We explore what happens to space debris closest to the earth.
12:47
We look at the century-long quest for the Holy Grail: synthetic blood.
13:38
The process might be relatively simple but it's dangerous and illegal without a license.
9:32
Gas stove ranges are polluting our homes.
13:43
We look at the science behind the whole process, from sap to syrup.
11:50
With the right cleaning methods, we can turn the dirtiest water into safe cleaning water.
9:12
Counterintuitively, you do it with explosives.
12:10
We’re gonna dive into the controversial chemistry of water's unusual properties.
10:03
Plot twist: Toxic Anhydrous ammonia is responsible for 50% of the food on your table.
8:43
It all has to do with the octane rating!
7:29
This is a deeper dive into how complicated and climate based hibernation is.
10:50
There is so much more to these “negatively charged particles” than we've thought.