It's rare that you know exactly where a population became started and then its march across an area.

I think it's going to be longer than that. In Florida, we're going to see some slowing of population growth, so that will magnify the impact.

Construction vandalism has existed since the population in Spotsylvania started growing,

If you have suitable habitat and a viable [tortoise] population, the answer isn't to dig them up and move them.

The U.S. has had fire walls in place to protect the cattle population from getting infected with mad cow disease and there are some gaps in these fire walls.

It's had a very, very rapid geographic range expansion.