Senior Writer, Planet Forward
Once thought of as the stuff of science fiction, driverless cars already have become science fact. But what of safety — and the environment?
Planet Forward, George Washington University School of Media and Public Affairs
We've got the stories, ideas and facts behind President Obama's big speech on climate change.
During his State of the Union address, President Obama set a new goal: by 2035, 80 percent of America's electricity will come from clean energy sources. Watch