A potential Alzheimer’s breakthrough, what to watch in the first Biden-Trump debate, and more

Evan Osnos of the New Yorker describes what he’ll be watching for in tonight’s presidential debate.

AI is exhausting the power grid. Tech firms are seeking a miracle solution. The Washington Post’s Evan Halper is on the story.

The brain makes a lot of waste. Now scientists think they know where it goes. NPR reports.

Today’s episode was guest-hosted by Gideon Resnick.