With the World Series about to begin, we check in with Dr. Meredith Wills, an astrophysicist, about one of this season's biggest storylines -- the record-setting number of home runs and the allegedly "juiced" baseballs. Wells has been studying MLB balls for years, and she explains her findings. Plus, we check in with The Athletic's Jayson Stark about how the balls used in the World Series might affect the teams involved, and we look at how the Astros and Nationals match up against one another.

You can hear more from Jayson Stark every Tuesday on his "Starkville" podcast:

https://theathletic.com/podcast/25-starkville/?source=theleadpodcast

And revisit the 2000 World Series with the latest "Sports Wars" series about the Subway Series: https://wondery.com/shows/sports-wars/

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