In the article Why alternative energy sources such as biofuels, solar, and nuclear are not the magic ticket, Michael Grunwald from Time Magazine challenges the notion that if we invest enough in alternative energies we can reduce emissions enough to reverse climate change. His main argument is that the cheapest and most effective way to reduce emissions is to improve efficiency of our tools and gadgets. And how about simply using them less?

It wouldn’t kill you to turn down the heat and put on a sweater. Efficiency is a miracle drug, but conservation is even better; a Prius saves gas, but a Prius sitting in the driveway while you ride your bike uses no gas. Even energy-efficient dryers use more power than clotheslines.

Michael Grunwald | Foreign Policy

I believe we have stop thinking that we are not looking at small changes. Especially, if we want to offer a decent future to billions of poor people, we have to start accepting that drastic changes to our lifestyles are needed.