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Study: countries seeking to cut CO2 emissions must get a handle on city-level emissions

Green Car Congress

Countries seeking to meet Paris Agreement targets on CO 2 emissions must get a grip on the amount of pollution produced at city level, according to a new open-access study published in S cience Advances by an international team of researchers from Europe and China. Total CO 2 emissions of 182 Chinese cities. Shan et al.

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DEKRA-certified tests: Mercedes-Benz HD trucks cut fuel consumption 22% in 20 years while meeting more stringent emissions rules; VECTO

Green Car Congress

Despite drastically more stringent emission standards for nitrogen oxides and particulates, the fuel consumption of Mercedes-Benz heavy trucks has been reduced by 22% over the last 20 years, according to the results of a comparative test drive certified by the test organization DEKRA. Click to enlarge. g/kWh of particulate mass. mpg US); and.

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A Skeptic’s Take on Beaming Power to Earth from Space

Cars That Think

Energy experts have been warning that electricity is likely to get more expensive and less reliable unless renewable power that waxes and wanes under inconstant sunlight and wind is backed up by generators that can run whenever needed. The energy sent Earthward by the craft was too meager to power a lightbulb, but it was progress nonetheless.

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