Did you see this week's blog post from The Worldwatch Institute about how urban communities are growing green spaces? As we look forward to the launch of State of the World: Can a City Be Sustainable? this spring, it's nice to take a look back at other editions of The Worldwatch Institute's flagship publication. In State of the World 2015: Confronting Hidden Threats to Sustainability, experts explore hidden threats to sustainability and how to address them. How will nations deal with migration as climate change refugees cross borders in order to escape flooding, drought, or other extreme weather events? What will happen to the price and availability of fossil energy—the foundation of industrial civilization--as these resources oscillate between surplus and scarcity? If perpetual economic growth on a finite planet is impossible, what are the alternatives? Can national governments manage the transition? Eight key issues are addressed in depth, along with the central question of how we can develop resilience to these and other shocks.

Check out an excerpt of the book below.