ScienceDon't open until ChristmasTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceConor Dillon12/17/2019December 17, 2019Want to give the perfect gift, but also receive it? There's some surprisingly rich science on the subject that'll save you money and guilt. Also why we end up despising certain Christmas songs, and the future of shopping.https://p.dw.com/p/3UyOYAdvertisement