It's a sunny March afternoon at Winchester Village Elementary School in Indianapolis, and teacher Natasha Cummings is leading her class in a brand new lesson. It's the first time she's teaching it – ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Getting to see even ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A partial solar ...