A groundbreaking new study claims to have found a way for a fully paralyzed person to communicate entirely via thought. But the scientists behind it have a checkered past.

This episode was produced by Miles Bryan, edited by Matt Collette, engineered by Efim Shapiro, fact-checked by Tori Dominguez and Laura Bullard, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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