Cap & Trade; carbon taxes just won't work...

Bjorn Lomborg says we should just focus on the real problem - using R&D to come up with low-carbon energy...

Politicians favor the cap-and-trade system because it is an indirect tax that disguises the true costs of reducing carbon emissions. It also gives lawmakers an opportunity to control the number and distribution of emissions allowances, and the flow of billions of dollars of subsidies and sweeteners.

Many people believe that everyone has a moral obligation to ask how we can best combat climate change. Attempts to curb carbon emissions along the lines of the bill now pending are a poor answer compared with other options.

Consider that today, solar panels are one-tenth as efficient as the cheapest fossil fuels. Only the very wealthy can afford them. Many "green" approaches do little more than make rich people feel they are helping the planet. We can't avoid climate change by forcing a few more inefficient solar panels onto rooftops.

The answer is to dramatically increase research and development so that solar panels become cheaper than fossil fuels sooner rather than later. Imagine if solar panels became cheaper than fossil fuels by 2050: We would have solved the problem of global warming, because switching to the environmentally friendly option wouldn't be the preserve of rich Westerners.

This message was recently backed up by the findings of the Copenhagen Consensus project, which gathered eight of the world's top economists -- including five Nobel laureates -- to examine research on the best ways to tackle 10 global challenges: air pollution, conflict, disease, global warming, hunger and malnutrition, lack of education, gender inequity, lack of water and sanitation, terrorism, and trade barriers.

These experts looked at the costs and benefits of different responses to each challenge. Their goal was to create a prioritized list showing how money could best be spent combating these problems.

The panel concluded that the least effective use of resources in slowing global warming would come from simply cutting carbon dioxide emissions.