If anything's got a chance of solving the world's problems, it's science and technology.

And every breakthrough was the result of somebody doing the breaking through.

I'm David Poe.

This is Unsung Science, the untold creation stories behind the most mind-blowing advances in

science and tech, presented by CBS News and Simon & Schuster.

You can listen to Unsung Science wherever you get your podcasts.

For weeks, 60 minutes has been reporting on the fast-developing story of coronavirus

variants.

That's the UK variant, which was, you can see here, was identified of dates back to

about September of last year.

And then all of a sudden you get a lot of these, right?

And that's because it's more transmissible.

Tonight you'll hear from leading researchers in the field about what we know about the

variants and what science is doing right now to try to stop their spread.

The great city of St. Louis is divided.

The north side is predominantly black.

To the south, it's whiter and more affluent.

The city's murder rate is at a 50 year high.

And St. Louis has one of the highest rates of police shootings in the country.

Most of them against black citizens.

Enter Kim Gardner, a progressive prosecutor who has very publicly taken on the powerful

police union.

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