Intentionally engineering Earth’s atmosphere to offset rising temperatures could be far more doable than you imagine, says David Keith. But is it a good idea?
The community that built the largest encyclopedia in history is shrinking, even as more people and Internet services depend on it than ever. Can it be revived, or is this the end of the Web’s idealistic era?
Falling costs are making fuel-cell vehicles look like a plausible alternative to conventional cars.
While technically feasible, Musk’s hyperloop will likely be expensive.
A new study suggests that U.S. laws should go further to limit gun ownership and improve enforcement.
If you believe Tesla, affordable, long-range electric cars could be here sooner than many think.
BrightSource’s 370-megawatt facility near Las Vegas is taking shape, but the future of solar thermal is much more fuzzy.
Alberta will serve as a test bed for large-scale carbon capture and sequestration.
The president presents a plan to use the EPA to regulate carbon dioxide emissions from power plants.