mr. gerson: i thought you did, so -- [laughter] dan: 10,000 years ago, we had a africaecise analog of and north america, and especially in the country east of the mountains. when we did have elephants, we haveammoths, and we did camels and all sorts of large hunting cats with large teeth, hunting cats and hunting hyenas, and mega fauna from 10,000 years back that was a very close inlog of what one would find the serengeti national park inay, or in the masai mora south africa. some of those creatures, including the lions and the camels, and amazingly enough the horses, which 10,000 years ago -- 25%ed of about 25 t to 30% of the biomass of grazing animals in the midwest. by the way, if you did not realize that, horses evolved in north america, spread around the world, became extinct in north america 10,000 years ago, and survived elsewhere for us to return them, which is why they did so well here when we brought them back. but many of those animals, like the horses and camels, became extinct 10,000 years ago, and it is an altered american serengeti, but it would still be strikingly familiar