I hear they're some who want to bring back mammoths. They want to do this by using the frozen sperm exctracted from some of the males found in the tundra and impregnating modern asian female elephants. They say they are genetically compatible. The 1st generation will be 1/2 modern and mammoth. They use these to breed a 2nd generation, using the frozen sperm again. Now you have 75% mammoth hybrids. Then, these hybid herds(that is the goal), will be free to reproduce as needed. More than likely, they will be concidered a protected species.
Here is the problem, what ever mechanism that was present 10,000 years ago to cause they're extinction, might not be around now. I have doubts about humans over hunting them back then. At the end of the Ice Age, there were some exteme climatic changes. The movie "The Day After Tomorrow" is loosely based on that. The beasties were probably well on their way to extinction when some catastrophic event pushed them over to the end.
With these mechanism removed, how long before these things could be in our decendents back yards, shitting all over the place, and browsing in their flower gardens? Not to mention mammoth/car collisions.
Bilster