Transportation is responsible for one-quarter of the world's greenhouse gas emissions. While companies have touted electric vehicles and sustainable aviation fuel as ways to cut emissions from air and ...

German regional transport group RMV began construction on Monday of a filling station near Frankfurt that will use hydrogen generated as a by-product of chemicals manufacturing to fuel the world's ...

California is taking aiming at dirty diesel exhaust from locomotives with new regulations aimed at getting operators to shift to cleaner locomotives. For 50 years, California has ratcheted up rules to ...