The classic book on systems thinking—with more than half a million copies sold worldwide! "This is a fabulous book… This book opened my mind and reshaped the way I think about investing."— Forbes " Thinking in Systems is required reading for anyone hoping to run a successful company, community, or country. Learning how to think in systems is now part of change-agent literacy. And this is the best book of its kind."—Hunter Lovins

In 1972 four young scientists at MIT wrote The Limits to Growth, which shocked theworld and became an international best-seller. Using the World3 computer model,the authors looked toward the future, for the first time showing the consequences ofunchecked growth on a finite planet. Now, armed with 30 additional years of data,these authors sound the alarm on humanity’s devastating effects on climate, waterquality, fisheries, forests, and other imperiled resources.