There are millions of mammoth tusks in that Arctic ice that is melting.

And they're worth good money as a substituted for elephant ivory, which, unlike mammoth ivory, is illegal to buy and sell.

At the link, a picture of a man posing with a mammoth tusk — it's huge — that might be "worth $80,000 to $100,000 or even more."

[S]ome scientists lament the tusk hunting and trade. "Each of these tusks is kind of like a tree, which has rings," he says. "The tusks themselves can kind of carry information about the climate, the diet — that would be valuable data. On the other hand, if they find mammoth hair, or an intact mammoth, they're the first ones that tell the scientists."