Credit Jeff/Adobe Stock A new tool identifies the potential for replanting trees in Idaho and across the country. The Nature Conservancy and American Forests's Reforestation Hub is a comprehensive look at county-level opportunities for planting trees where they once grew. It found there are nearly 4.5 million acres of formerly forested land in Idaho. Susan Cook-Patton, senior forest restoration scientist for The Nature Conservancy, said replanting trees is one means for addressing climate change. "The point of this work is to say, OK, here is one tool," Cook-Patton explained. "Let's break it further down into ten different menu items that then you could pick what works best for your community, for your county, for your state."