How would you spend $10 billion?

Controversial Danish scientist Bjorn Lomborg, best known for expressing doubts about environmental priorities, asks a very interesting question in the Wall Street Journal this week. How would you spend $10 billion:

If you had a spare $10 billion over the next four years, how would you spend it to achieve the most for humanity?

This is a small amount compared to rich-government budgets. But if we could set aside an extra $10 billion, we could achieve an awful lot.

Would you spend your money tackling diseases like malaria, HIV and tuberculosis, which claim millions of lives each year? Would you battle hunger and malnutrition? What about climate change, which many believe is the biggest challenge facing the planet?

To get the most bang for your buck — and ensure that your generosity does the greatest good for the largest number of people — you will need to prioritize, weighing up the costs and benefits of different options. Unfortunately, we too often focus on the most fashionable spending options, rather than the most rational. Spending an extra dollar cutting C02 to combat climate change generates less than one dollar of good, even when we add up all the economic and environmental benefits. In contrast, a dollar spent on research and development into cleaner energy technology generates $11 of economic good. If that dollar was spent combating heart disease in the third world, it would achieve more than twice that again.

Copenhagen Consensus commissioned eight of the world’s top economists to identify the global challenges that can be solved most cost-effectively. Over the coming weeks, we will be challenging decision makers and opinion leaders to weigh in on this debate. We also encourage you to go to and respond to this article with your own priorities.

The economists commissioned by the Copenhagen Consensus argue that investment in anit-terrorism and climate change mitigation are not cost-effective, but they do find that investments in reducing disease and hunger in the third world are great investments. Read it all here.

Gee, who knew that the Wall Street Journal editorial pages would be devoted to such an effective argument in favor of the Millennium Development Goals!

How would you spend the $10 billion?

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