emissions

The diesel ban would apply to all new medium-duty and heavy-duty commercial trucks sold in California beginning in 2040, with some exceptions for certain emergency vehicles.

GM and the Environmental Defense Fund asked the EPA to develop emissions standards yielding a 60% reduction in greenhouse gas emissions by the 2030 model year.

Natural rubber from guayule could offset the oil, silica and virgin carbon black currently used in tires.

The EPA recently announced the levying of millions of dollars in fines against companies for selling equipment designed to circumvent pollution controls, illegal under the Clean Air Act.

States that follow California emissions rules represent about a third of the U.S. auto market, and they each may also adopt the new targets.

Significant "turnover lag" between the start of new EV sales regulations and the retirement of internal-combustion vehicles could get in the way of ambitious goals, researchers argue.

The assurance that your EV will keep getting cleaner and more climate-friendly with the grid—everywhere in the U.S.—is no longer a foregone conclusion.

The more electricity EVs consume from a dirty grid, the bigger their carbon footprint; EV efficiency is important.

The automakers face off versus a coalition of 17 state governments opposing a significant portion of the auto industry and rallying for greater emissions

The state's hydropower generating capacity is nearly half that of normal conditions, forcing California to rely on more carbon-intensive sources for a greater amount of its grid mix

Emissions Analytics performed chemical analysis of hundreds of new tires and now concludes tire-wear particulate emissions are 1,850 times greater than tailpipe particulate emissions.

Well-timed signals can have a significant impact on emissions—equivalent to the CO2 absorbed by a forest 3.3 times the size of Atlanta, according to Inrix.

The mpg standards are a step steeper than an original proposal. Arriving at an effective 49 mpg, they boost fleet efficiency by 8% to 10% annually for model years 2023-2026.

Texas and 15 other states, along with ethanol groups, have challenged the EPA's emissions rules under the Biden administration

It's been a long time coming. Enforcement had been delayed after automaker lobbying, triggering a lawsuit from California.

Producers argue that the new rules exceed the EPA's authority because they effectively force automakers to produce electric cars

Environmental groups claim the EPA's proposed standards should do more to encourage deployment of electric trucks.

Relatively simple strategies like smart charging and time-of-use rates will help smooth utilities' loads and get the most from renewables.

The Supreme Court made an unexpected decision to hear a case from the coal industry, challenging the EPA's authority to shift to less-polluting power generation sources.

Stricter standards on the U.S., Europe, and China could provide strong revenue for EV makers—especially Tesla.