And of course over the next 175 million years, that's going to break up into the seven continents that we know today. And really, we're going to have two worlds. We're going to have the New World, the Americas, and then what we're going to call the Old World, Africa, Asia, Europe. And over that 175 million years, they're going to grow up differently, ecologically, evolutionary. And in 1972, a young man by the name of Alfred W. Crosby, he might have been old, from the University of Texas at Austin wrote a book called The Columbian Exchange, where he wrote about the tremendous effects that occurred when these two worlds, the Old World and the New World, clashed, came together. Not always intended consequences, sometimes unintended consequences, but they shaped the world we know today. They are revolutionary in the sense that they're going to change everything.