Here’s your primer on California’s far-reaching climate plan.
U.S. cities are getting hammered by climate change. What are they doing about it?
In the future, wind turbines will be bigger than Godzilla.
A desalination plant doesn't have to be ugly.
Why is Google trying to get into the hitchhiking business?
Altamonte Springs, Florida, struggled for years to develop a transit system.
So what if the rest of the world had high-speed trains before Madonna started making hit records?
Solar is getting cheaper -- but not because of technology.
Installing wind devices could cut container ship fuel use by more than 10 percent, according to one expert.