Fan Favorite: What's the Science of Invisibility?

Sure, invisibility is about Harry Potter cloaks and invisible inks. But it’s so much more than that, too! From the way butterflies see a secret world of light that humans can’t, to the reason polar bears are completely undetectable to infrared cameras, there’s a whole big world you ought to hear about… even if you can’t see it. Featuring author Bob Berman. Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htm And to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices