It is way past time for the World Bank Group to change course and invest in clean energy instead of fossil fuels. There are clean energy alternatives literally popping up all over the place.

Does a critical mass of outraged citizens qualify as a "major geopolitical shift"? Think of the Vietnam War. Or apartheid, a truly global protest. We may not be there yet, but as climate change impacts get worse, so will the outrage.

The two Asian powerhouses have now begun to argue over a shared threat that actually does have impacts on the health and future of their respective populations -- air pollution

As you reflect on the this year's Super Bowl, take a moment to think about the individual stadiums competing in the Solar Bowl. Their commitment to tap into our largest source of energy in the US -- solar energy -- is a clear example of how individual leaders are moving America forward.

The large bulk of oil consumption is from transportation, and as laid out in painful detail on SmartPlanet, the drop is not due to greater vehicle efficiency. So what is driving this drop?

One thing I simply do not understand about the U.S. and Europe's rising unemployment is why not support more green jobs in renewable energy?

Here's our policy lesson in a nutshell: Bangladesh is the world's demonstration case for an off-grid clean energy access plan that delivers. Bihar and UP are the next phase that will take this approach to scale. Maybe, just maybe, 1.3 Billion people later, the message, small solar is big, will finally sink in.

If the U.S. Congress can't even move off its own use of dirty energy -- so symbolically small -- is it any wonder that the annual UN climate talks result in such pathetic action?

Last week's presidential debate was supposed to showcase the differences between President Obama and his challenger, Mitt Romney. But between Romney's...

Without climate change, Obama is open to charges of using taxpayer money to play with the sun and wind and counting on imaginary jobs to save the unemployed. A delusional demi-God claiming he'll change the world.

U.S. commercial solar installations have reduced those business' utility bills by millions of dollars annually while generating enough electricity to power more than 390,000 homes.

As the Republicans gather in Tampa this week for a delayed nominating convention, the conventional wisdom is that a gathering in "the Sunshine State" is a bit ironic for a party that seems to occasionally enjoy bashing solar power.

You wouldn't mount your solar panels in the shade, would you? That would be dumb. Don't do the same with a wind turbine. Remember, both solar and wind are all about the size of the collector and the intensity of the resource.

By setting some rules and goals that everyone agrees on, our government can play a crucial role in responsibly advancing market forces and creating good-paying, long lasting jobs here in America.

Every hour the sun bathes Earth with as much energy as all human civilization uses in an entire year. Let me tell you about some spectacular and pragmatic solar technologies helping to reduce our global carbon footprint.