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"Everyone needs to do their bit ... to end this public health emergency."

"Everyone needs to do their bit ... to end this public health emergency."

The City of Light — and smog.

The City of Light — and smog.

We need trees: Deforestation, degradation are adding to carbon output on every continent.

We need trees: Deforestation, degradation are adding to carbon output on every continent.

"The service actions involve no costs for the customers."

It's meant to keep momentum going on the Paris climate agreement.

The report said the costs of renewable power will continue to fall.

Move favors oil, coal industries.

Trump says the plan hurts the fossil fuel industry, yet it was never actually implemented.

Why lowering the fuel-economy standards might not be in car companies' best interest.

Will the easing of fuel mileage standards be a good thing for the auto industry? At least one experts thinks not.

FCA, Mercedes, and Kia narrowly miss EPA's requirements.

Average fuel economy between all automakers is up to 24.8 mpg.

The last time refueling was this cheap was in 2004.

Low gas prices make this the best July for a road trip in a long time.

Grid mix, climate, and local driving patterns affect an EV's emissions.

Looking to lower your carbon footprint? This map will tell you which car to drive.

Canada's budget seeks to clean up transportation.

Canada's 2016 budget plan sets aside cash for EV charging and public transit.

An electric fleet and biofuels are the key.

Drive Clean Seattle relies on carbon neutral electricity to power a growing fleet of EVs.

Drivers can help head off climate change by choosing more fuel-efficient vehicles.

Reduce the amount of food you discard. Turn down the thermostat by three degrees for eight hours a day. Consume less meat.

Corporate Environmental Strategy Sounds Good, Even In This Odd Week

Honda announces updates to Green Path, its big project to reduce GHG emissions by 50 percent by 2050.

We're Doing Worse In The Last 6 Months, But Way Better Than 2007

The University of Michigan Transportation Research Institute calculates the average MPG of new cars sold in the US, and finds that June was worse than May.

You try to do a good thing, but someone always has to come around and say there's a down side. In this case, the good thing is AB 32, also known as California's greenhouse gas emission reduction law, and the potential down side is one that could generate a lot of bad publicity.

Among all the various factors playing into the collapse of bee colonies around the world, one of them could be your car. A UK study into how diesel exhaust fumes may affect bees' ability to pollinate flowers found that nitric oxide (NO) and nitrogen oxide (NO2) - NOx gases - change the chemical composition of floral odors, making it harder for them to identify and locate flowers that they're normally attracted to, National Geographic reports. While this study focused on diesel engine exhaust fum

Fuel-efficient cars might be nearly synonymous with Toyota here in the US, but in Mexico, the Japanese automaker is reportedly leading a fight in a dustup over more stringent automobile fuel efficiency regulations. Mexico's government is reportedly trying to make its own mile-per-gallon rules the same as those in the US as part of an effort to reduce greenhouse gas emissions throughout its economy, but Toyota isn't taking too kindly to the proposed legislation.

It's got to be difficult to accurately measure and predict the amount of greenhouse gases in the atmosphere, but if tests by the World Meteorological Organization (WMO) are correct, then things are getting worse than people originally thought.

Operating an electric vehicle in China today emits more greenhouse gases than simply driving a gasoline-fueled equivalent, according to emissions expert Juerg Gruetter of Gruetter Consulting. The reason is that, despite the country's push to promote electric vehicles, China's power grid is so overwhelmingly fed by dirty coal that recharging the battery-powered rides will release far more emissions than just putting gasoline in the tanks of the nation's 200-plus million registered vehicles.

Tiny chemical particles emitted by diesel fumes could raise the risk of heart attacks, research has shown. Scientists have found that ultrafine particles produced when diesel burns are harmful to blood vessels and can increase the chances of blood clots forming in arteries, leading to a heart attack or stroke.

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