 So let's say we've got 20 or 22 million acres of land that we can restore right at home simply by shrinking the lawn and then putting the very powerful plants back. I always talk about plants being in three categories. They're plants that contribute energy to local food webs, plants that don't contribute energy to local food webs, and plants that actively remove energy from local food webs. So oaks, for example, the very best contributor across the country in 84% of the counties in which they occur.