climate change Watch: visualization of how many solar panels are required to power the world Mark Frauenfelder
renewable energy Study: the biggest barrier to solar expansion is that you can't price gouge Thom Dunn
solar energy Solar energy will soon "undercut even the cheapest fossil fuels in many regions of the planet" Mark Frauenfelder
climate change New Belgium Brewing tackles carbon emissions by ditching gas for electric heat-pump boilers Thom Dunn