@CNN: How Rudolph got a bright red nose… and other holiday science explained https://t.co/4rSUKpbIzd https://t.co/d4fg4unAU0
How Rudolph got a bright red nose… and other holiday science explained https://t.co/4rSUKpbIzd http://pic.twitter.com/d4fg4unAU0
— CNN (@CNN) December 24, 2017