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Climate-friendly diesel produced from animal fats and cooking oils is suddenly a booming business as fossil-fuel giants such as Exxon Mobil Corp. and Chevron Corp. race to cut their emissions and take advantage of incentives.

Plug Power Inc.’s bid to become a major supplier of carbon-free hydrogen just won the backing of one of the company’s oldest customers: Walmart Inc.

The national average price for diesel resumed its upward course, rising 2.8 cents to $5.101 a gallon, according to Energy Information Administration data released April 18.

PROVIDENCE, R.I. — Twitter said April 15 that its board of directors has unanimously adopted a “poison pill” defense in response to Tesla CEO Elon Musk’s proposal to buy the company for more than $43 billion and take it private.

The trucking industry urged federal regulators to consider how a proposal to tighten emissions limits on engines will affect motor carriers, as they’re the ones who will ultimately deploy the equipment subject to the new rules.

Elon Musk has made a controversial offer to buy Twitter Inc., saying the company has extraordinary potential and he is the person to unlock it.

The U.S. Export-Import Bank approved a plan April 14 that could yield a flood of financing for U.S. energy ventures, including wind and solar projects, battery manufacturing and terminals to sell LNG overseas.

U.S. retail sales picked up in March, helped by a surge in gas station receipts that masked mixed results in other large spending categories as consumers contend with decades-high inflation.

In an all-day virtual hearing, many of the roughly 140 parties commenting expressed support for the U.S. Environmental Protection Agency’s proposed new rule to tighten nitrogen oxides emissions. Others, however, either viewed the effort as a lost opportunity or attacked it as an overreach.