How Much Does a Shadow Weigh? (video)

How much does a shadow weigh? It never even occurred to me that they might have weight. Of course, truth be told, it never even occurred to me to even wonder if they did. But good thing for all of us, the kind folks over at Vsauce not only wondered, they did the math to figure it out and then shot this fun video explaining it to us plebes.

Long story short, it turns out that shadows actually have a mass due to force exerted by the light that causes them. I had absolutely no idea. Check out the video for a really great explanation and to feel a little smarter for hump day. (And don't forget to share this with the kiddies!)