Documents obtained by the Center for International Energy Law reveal that as early as the 1960s oil companies were developing technologies to reduce and capture carbon dioxide, which may have helped to avoid decades of planet-warming emissions.
Riversimple is looking for investment to bring its Rasa car to the public—but while you can invest, you can't buy.
A rare glimpse at the potential future tech that never was.
Hydrogen fuel harvested from water with help from the sun, as you drive.
Researchers have successfully tested a new fuel cell battery that extracts enough energy from urine to power a smartphone.