Is time travel possible?
Will we ever get to rewind time, or fast forward through it? Sanden stops by to tell us all about how time works. He also has a couple ideas about how we might make time travel a reality! But one tricky thing about time travel is that it\u2019s full of paradoxes \u2014 so we look into those, too. And science fiction expert Lisa Yaszek swings by to tell us just how long humans have been thinking about time travel (hint: a really long time).
Listen closely for the mystery sound, and the moment of um: how do clothes get dirty even though you can\u2019t see it?
Today\u2019s episode is sponsored by: Mathnasium: (mathnasium.com) and Sun Basket (sunbasket.com/brainson - promo code: brains on)