Here's how renewable fuels, drones and the EPA's SmartWay program are all paths to efficiency and lower costs.

What will it take to move the needle on mass adoption of electric vehicles? Hint: authenticity, happy customers and smart salespeople.

The first EV Rally of the Rockies shows that there are more charging stations that you might think — and that EVs aren't just for urban commuters.

Forming a closed-loop system, renewable natural gas is the most sustainable fuel available. How can we get a big RNG initiative moving?

Formula E pens a deal with UK firm Aquafuel to use glycerine-powered generators to recharge electric race cars.

Columbia University researchers are making tiny organisms that consume renewable electricity and turn it into "electrofuel," the diesel of the future.

Honey analyses provided by an independent lab show that pollution levels from Hamburg Airbus facilities are lower than in the city center. 

What can you do with 14 shipping containers of used leather? The airline is teaming with social entrepreneurs to find out.

As the FAA prepares rules for drones, these companies are landing serious interest from the likes of Amazon, Boeing, BP and Google.