Abundant Clean Renewables? Think Again!

From the text: Zero-carbon, clean energy? Well, no. And yet, there are no large-scale energy sources with lower carbon emissions and less harmful environmental impacts than wind and solar power. As one scientist argues from the perspective of thermodynamics: "To talk about 'renewable energy' or 'sustainable energy' is an oxymoron, as is 'sustainable mining' or 'sustainable development.' The more energy we use, the less sustainable is humanity."