Sleep scientist Michelle Carr has spent years researching dreaming. She explains dream engineering, including how sensory inputs like light, sound and vibration can influence the subconscious.
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Tonya Mosley
Tonya Mosley is a co-host of Fresh Air. She's also the host of the award-winning podcast Truth Be Told, and a correspondent and former host of Here & Now, the midday radio show co-produced by NPR and WBUR.