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Steel could shed its reputation as a climate threat by using hydrogen instead of fossil fuels for as much as half of global output by 2050, according to BloombergNEF.

Amazon.com, Exxon Mobil Corp. and Volvo are among more than 700 companies being targeted in a campaign backed by a large group of investors advocating for greater transparency when it comes to environmental impact.

The White House is rejecting a bid from domestic and foreign automakers to restart talks with California over vehicle emissions regulations.

Although large gains have been made in cleaning up new diesel engines, nearly two-thirds of all commercial trucks don’t meet the latest emissions standards. As of 2017, some 36% of all commercial trucks (Classes 3-8) in the United States rely on the newest generation of diesel engines — a 6% increase over 2016, according to the Diesel Technology Forum, which cited the latest data.

Royal Dutch Shell Plc’s position on climate change is misaligned with about half of the trade associations it’s a part of, and the company says its disagreement with one is so severe that it will let its membership lapse next year.

Carbon emissions from fossil-fuel use hit a record last year after energy demand grew at its fastest pace in a decade, reflecting higher oil consumption in the U.S. and more coal burning in China and India.

Volkswagen AG and its former CEO were sued by the U.S. Securities and Exchange Commission over claims they failed to disclose to investors that diesel vehicles violated emissions standards, the latest twist in a software cheating scandal that already has cost the company more than $30 billion.

Fiat Chrysler Automobiles NV recalled almost 863,000 vehicles that violate U.S. emissions standards, another knock for the company after it agreed to make amends for building different trucks and SUVs that polluted more than legally allowed.

Democrats’ Green New Deal manifesto aimed at revolutionizing the country’s transportation system by drastically reducing fuel emissions was described as a fantasy by the top Republican transportation policymaker in the U.S. House of Representatives.