Chipotle E. coli illnesses climb to at least 37

Chipotle Mexican Grill's commitment to tracking its ingredients from farm to table is being put to the test by an E. coli outbreak that has sickened at least 37 people, nearly all of whom ate recently at one of the chain's restaurants in Washington state or Oregon. Scientists also said they identified the specific microorganism responsible — Shiga toxin-producing E. coli O26 — which they believe was carried on fresh produce such as lettuce, tomatoes, cilantro or onions. The chain of casual Mexican restaurants voluntarily closed 43 locations in the two states after health officials alerted them to a growing number of E. coli cases involving people who ate at Chipotle during the past two weeks.

Former Wal-Mart exec lands Cirrus by chute

A former chief executive at a division of Wal-Mart Stores Inc. crash-landed a plane on a highway in front of an Arkansas high school after the aircraft's oil system failed. The plane was identified in multiple media reports as a Cirrus SR22T, made by Cirrus Aircraft of Duluth. Bill Simon, who led the company's U.S. operations from 2010 to 2014, was flying from nearby Bentonville to Waco, Texas. Simon and two other men aboard the plane were taken to a hospital, as was a woman whose truck was hit by the falling plane. Police described each injury as minor. Simon said he unfurled the plane's parachute after the oil system failed. He said that he suffered a burn as an air bag deployed and that he was grateful that all survived.

Volkswagen reveals new emissions problem

Germany's Volkswagen, already reeling from the fallout of cheating on U.S. emissions tests for nitrogen oxide, said that an internal investigation has revealed "unexplained inconsistencies" in the carbon dioxide emissions from 800,000 of its vehicles — a development it said could cost the company another $2.2 billion. The investigation was undertaken by the company after the revelations that many of its vehicles had software that allowed them to deceive U.S. nitrogen oxide tests. CEO Matthias Mueller promised that Volkswagen "will relentlessly and completely clarify what has happened."

Porsche halts U.S. sales of diesel Cayenne

Porsche is voluntarily halting the sale of some diesel SUVs in the U.S. and Canada after U.S. regulators accused the brand of using software to cheat on emissions tests. Porsche said it is halting sales of diesel Cayennes from the 2014-2016 model years until further notice. A Porsche spokesman didn't know how many vehicles were affected.

Jon Stewart has production deal with HBO

Less than three months after signing off from "The Daily Show," Jon Stewart has signed a four-year production deal with HBO, the network said. The partnership will find Stewart developing "timely short-form digital content" for HBO Now, the network's subscription video service. The content will be refreshed throughout the day and will "view current events through his unique prism."

CEO steps down at Groupon; forecast lags

Groupon Inc., the operator of daily deals website, said co-founder Eric Lefkofsky was stepping down as chief executive and returning to the role of chairman, effective immediately. The company also forecast current-quarter and 2016 revenue below analysts' expectations, sending its shares down 27 percent in extended trading. Chief Operating Officer Rich Williams will succeed Lefkofsky as CEO, Groupon said.