If Dmitri Mendeleev was alive, we'd be wishing him a happy birthday today. He's not—and thank goodness, because he'd be a 180-year-old science-zombie. But Mendeleev's periodic table of the elements is a scientific treasure, one that's still predicting elements we haven't yet discovered. Talk about prescient.
As this fun little cartoon from TED-ed points out, Mendeleev's periodic table is a ubiquitous sight in schools, on T-shirts, and in non-scientific spoofs. But the real deal is more than just an image: it's a deep and elegant organization of the elements. This simple chart is so powerful, it can predict the density, conductivity, and melting point of elements that haven't been discovered yet.