All your COVID-19 vaccine questions answered, and a new theory on forming rocky planets

surface of Mars with podcast symbol overlay


European Space Agency/Stuart Rankin/Flickr

Science Staff Writer Jon Cohen joins host Sarah Crespi to take on some of big questions about the COVID-19 vaccines, such as: Do they stop transmission? Will we need boosters? When will life get back to “normal.”

Sarah also talks with Anders Johansen, professor of planetary sciences and planet formation at the University of Copenhagen, about his Science Advances paper on a new theory for the formation of rocky planets in our Solar System. Instead of emerging out of ever-larger collisions of protoplanets, the new idea is that terrestrial planets like Earth and Mars formed from the buildup of many small pebbles.

This week’s episode was produced with help from Podigy.

Listen to previous podcasts.

About the Science Podcast

Download a transcript (PDF).

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