Nebraska could be on the verge of what some people say is the biggest land grab since the Homestead days, when early settlers staked their claims to 160 acres. But this time, speculators are after thousand of acres of land, not hundreds. And they don't want the land for growing crops. They want to use it to harvest wind energy. "Nebraska has not seen this kind of gold rush mentality," said John Hansen, president of the Lincoln-based Nebraska Farmers Union. "Nebraska is sitting on a ton of wind capacity."