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Welcome to the Science Podcast for February 19, 2021. I'm Sarah Crespi. Each week, we feature the most interesting news and research published in science and the sister journals. First up this week, staff news writer John Cohen talks about the open questions around COVID-19 vaccines,

like, do they cut down on the transmission of the virus?

Then I talk with researcher Andrews Johansson about a new theory on the formation of terrestrial planets. How did rocky planets, like Earth and Mars, come to be at the very beginning of the solar system?

First up this week, we have staff writer John Cohen, and we're going to talk about the state of

coronavirus vaccines and some of the most pressing questions surrounding them. Hi, John.

Hey, how are you, sir?

...