Sustainable Humanity

We should care about that scenario, because remaining on a path of rising global emissions is almost certain to cause havoc and suffering for billions of people as they are hit by a torrent of droughts, heat waves, hurricanes, and more. We have already experienced the onset of this misery in recent years, with a spate of devastating famines, floods, and other climate-related disasters.

So, how can the world’s people – especially its poor people – benefit from more electricity and more access to modern transportation, but in a way that saves the planet rather than destroys it? The truth is that we can’t – unless we improve dramatically the technologies that we use.

We need to use energy far more wisely while shifting from fossil fuels to low-carbon energy sources. Such decisive improvements are certainly possible and economically realistic.

Consider the energy inefficiency of an automobile, for example. We currently move around 1,000 to 2,000 kilograms of machinery to transport only one or just a few people, each weighing perhaps 75 kilograms (165 lbs.). And we do so using an internal combustion engine that utilizes only a small part of the energy released by burning the gasoline. Most of the energy is lost as waste heat.

We could therefore achieve huge reductions in CO2 emissions by converting to small, lightweight, battery-powered vehicles running on highly efficient electric motors and charged by a low-carbon energy source such as solar power. Even better, by shifting to electric vehicles, we would be able to use cutting-edge information technology to make them smart – even smart enough to drive themselves using advanced data-processing and positioning systems.

The benefits of information and communications technologies can be found in every area of human activity: better farming using GPS and micro-dosing of fertilizers; precision manufacturing; buildings that know how to economize on energy use; and, of course, the transformative, distance-erasing power of the Internet. Mobile broadband is already connecting even the most distant villages in rural Africa and India, thereby cutting down significantly on the need for travel.

Banking is now done by phone, and so, too, is a growing range of medical diagnostics. Electronic books are beamed directly to handheld devices, without the need for bookshops, travel, and the pulp and paper of physical books. Education is increasingly online as well, and will soon enable students everywhere to receive first-rate instruction at almost a zero marginal cost for enrolling another student.

Yet getting from here to sustainable development will not just be a matter of technology. It will also be a matter of market incentives, government regulations, and public support for research and development. But, even more fundamental than policies and governance will be the challenge of values. We must understand our shared fate, and embrace sustainable development as a common commitment to decency for all human beings, today and in the future.

Jeffrey D. Sachs is Professor of Economics and Director of the Earth Institute at Columbia University. He is also Special Adviser to United Nations Secretary-General on the Millennium Development Goals.

Copyright: Project Syndicate, 2012.www.project-syndicate.org

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