Evidence has been accumulating for the past several decades that mankind will likely be threatened by its own existence sometime in the next 50-100 years.

By the end of the 21st century, population and economic growth will cause depletion of many essential natural resources and serious deterioration in many terrestrial and marine habitats, including our own. This catastrophe can be averted. We have the tools. Why aren't we doing more? What can we do to change course?

A physician and entrepreneur whose career has spanned academic medicine, the bio-pharmaceutical industry, and environmental biotechnology, Dr. Craig Smith guides you through an objective and apolitical analysis of this threat and describes how we can respond and what we must do now to change course and create a sustainable future. At the end of this journey, you will have a better understanding of population growth, climate change, and natural resource depletion, and why, collectively, they are A Perfect Threat.

Visit http: //aperfectthreat.com/ for additional data on population growth, climate change, and natural resource depletion, including tables, graphs, and charts with links to primary data sources. The website contains reviews of important new research on population growth, climate change, and natural resource depletion as well as a forum for exchange of ideas on methods and strategies to mitigate the consequences.

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Founded in 2002, World of Books is a leading online destination for buying and selling both preloved and new books, committed to making sustainable reading accessible to all. With a mission to help people read more and waste less, World of Books offers a huge range of affordable, high-quality books ? giving both new and preloved titles a second life. The company also operates World of Books ? Sell Your Books, an easy-to-use platform that allows customers to trade in unwanted books for cash, helping to keep books in circulation while promoting sustainability. As a Certified B Corp, World of Books is driven by a vision to become the world?s largest and most sustainable dedicated online bookstore. The company measures its success through the positive environmental impact it creates, the value it provides to customers, and its ability to operate profitably while supporting its sustainable mission

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