![This Week I Learned show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/068/514/small/this-week-i-learned.jpg)
Summary: Dogs sense time through smell | The life-extending effects of humor | Easing regret through temperature | The pineapple's luxe history
Summary: Dogs sense time through smell | The life-extending effects of humor | Easing regret through temperature | The pineapple's luxe history