About This Lesson
If you’ve been outside before a rainfall in the spring, you might have noticed a particularly fresh or sweet smell that seeps into the air a few minutes before the first drops begin to fall. If you’re familiar with this smell, it’s a great way to predict when the rain is about to start. What, exactly, makes the air smell like rain? In fact, that fresh smell isn’t coming down from the sky at all. It’s coming up, from the ground beneath your feet.
