Name: One scientist's startling discovery will change how you see the Mona Lisa
Uploaded: Wed Dec 09 2015 18:39:00 GMT+0000 (UTC)
Duration: 1 min 1 s
Description: In this episode of "2 Things," TODAY producers share two stories you should know today: a new revelation about the Mona Lisa, and a seriously surprising Christmas gift.

Dec. 9, 201501:01