Good morning, Quartz readers! HERE’S WHAT YOU NEED TO KNOW The CDC thinks it has found the culprit behind the McDonald’s E.coli outbreak. Shed a tear for the fast food chain’s slivered onions . Suggested Reading Amazon beats third-quarter earnings expectations on strong cloud growth Apple sees record revenues on strong iPhone sales Elon Musk's role working for Trump has been downgraded to 'writing software' MrBeast could replace his thumbnail creators with AI, media exec says CC Share Subtitles