Car makers ask US officials to loosen fuel economy requirements
They want to use a credit system to keep some polluting cars on the road.
Dyson plans to release its own EV by 2020
The company is putting billions of dollars towards the project.
Researchers estimate the human cost of emissions cheating (updated)
Up to 5,000 deaths would have been avoided in Europe if car companies hadn't cheated emissions tests.
VW engineer sentenced to 40 months in prison for emissions cheating
James Liang has also been ordered to pay a $200,000 fine.
California continues to lead the US in renewable energy
But its greenhouse gas emissions reductions have stalled.
Mazda's engine breakthrough promises big fuel efficiency gains
Mazda says it's nailed the compression-ignition gasoline engine.
Scientists find cleaner, more efficient way to turn CO2 into fuel
It could reduce in those moments when you still need gasoline.
BMW denies conspiring with rivals on diesel emissions systems
No car maker is immune from accusations, it seems.
Scientists: Suck CO2 out of atmosphere or face the consequences
It's too late to simply reduce emissions.