My recent favorite: <i>The Planet Remade: How Geoengineering Could Change the World</i> by Oliver Morton.  Engagingly written -- I could hardly put it down! -- comprehensive, thorough, and optimistic without being credulous, this book contains a wealth of information about the &quot;earthsystem&quot; (as Morton likes to call it) and the effects we&#x27;re already having on it as well as those we could potentially create intentionally.  The book makes an excellent case for expanding research into geoengineering, and I hope it gets widely read.