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Ford Motor Co. and Volkswagen AG warned a swirling legal dispute between two South Korean battery suppliers could threaten their plans to start producing electric vehicles in the U.S.

Oil climbed to the highest level since early March in London on July 21 as hopes for an economic recovery from the coronavirus crisis lifted financial markets.

After six consecutive weeks of increases, the national retail price of diesel fuel fell by five-tenths of a cent to $2.433 a gallon from $2.438 the previous week.

Chevron Corp. agreed to buy Noble Energy Inc. for about $5 billion in shares as the oil giant looks to beef up in the Permian Basin amid the wreckage of the worst crude crash.

Nikola Corp. shares nosedived on July 20 as some investors will now be able to buy the company’s stock at a fraction of recent prices.

Halliburton Co. impressed investors by slashing costs more than expected as the fracking behemoth works its way through an historic shale bust. The shares surged more than 8%.

Oil prices recently tumbled as a resurgence in coronavirus cases and impending U.S. layoffs darken the economic outlook.

Researchers have developed a promising yet surprisingly simple modification to diesel engines that could hold the key to reducing the complexity, maintenance, and size and weight of emission aftertreatment systems.

Tesla Inc. kept growing in China last month, with registrations of its electric vehicles jumping to a record in the world’s largest market as the coronavirus outbreak receded.

Oil snapped its two-day rally amid a weaker demand outlook underscored by the OPEC+ alliance’s decision to taper production cuts and U.S. economic data signaling a slowing recovery in the labor market.