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Housing 9 billion won’t take techno-magic

Humanity already has at its disposal all the tools needed to make room for 9Ā billion people without killing the planet

Editorial: ā€œHow to engineer a better futureā€

A vision of the future built not around technical wizardry but democracy, with the engineering on tap but not on top? Not what you would expect from a group of engineers, but the UK’s has delivered just that. A report out this week shows how humanity already has at its disposal all the tools to make room for as many as 9 billion people.

There are ā€œno insurmountable technical issues in meeting the needs of 9 billion people… sustainable engineering solutions largely existā€, the engineers write in Population: One Planet, Too Many People?

Switching the world to low-carbon energy, for instance, does not require more research breakthroughs. We need instead to fix ā€œmarket failuresā€ that prevent widespread adoption of extant technologies, like concentrated solar energy and nuclear power.

Dams damned

The report even sidelines some traditional engineering solutions. Forget large dams, it says – increased water storage should come from recharging aquifers with treated waste water and flood waters.

As for where to put the projected 9 billion, it notes that most of the extra population will be in urban areas, often slums. Better homes are a priority, but the report rejects outright the ā€œengineering solution of decant-demolish-rebuild-returnā€.

Slums need help to improve, not a demolition ball. The report says the world should adopt a series of engineering goals to sit alongside the United Nations’ existing millennium development goals.

Another report out today also sets a high note, declaring that it is possible to feed the future 9 billion without trashing the planet.

Topics: Population