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Ready to spark something. Download the Sims 4 and play for free. This is CBS I on the World. Here's John Bachelor.

I'm John Bachelor. Where does lithium come from? Comes from the heavens.

That's right.

Comes from stars.

Special kinds of stars.

And to help me understand this,

I welcome Ken Kroswell, I welcome Ken Kraswell,

Dr. Ken Kraswell, author of The Lives of Stars

and other distinguished publications,

he's an astronomer, writing at Sky and Telescope,

which is a wonderful magazine for obsessive people watching the sky.

In an article of The Little Stars that Ken, we need to do some history, some discovery here.

Ken, there are Supernova, they get all the attention in

Hollywood movies. Boom! Destroying everything and our heroes race away just in time, at the speed of lighter faster. But simple NOVA or no V. What is the difference

between a supernova and NOVEE? Good evening to you. Good evening John. Well Novi are a lot more common

than supernovi, but you're right the supernovae get all the press because

they actually make the lion's share of many of the most important

elements here on earth.

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