Solvable: How We Healed the Earth, and How We Can Do It AgainA compelling and pragmatic argument: solutions to yesterdays environmental problems reveal todays path forward. We solved planet threatening problems before, Susan Solomon argues, and we can do it again. Solomon knows firsthand what those solutions entail. She first gained international fame as the leader of an expedition to Antarctica in 1986, making discoveries that were key to healing the damaged ozone layer. She saw a pathfrom scientific and