Sources: after the election, Zuckerberg agreed to temporarily tweak Facebook's algorithm to make authoritative news like CNN and NYT appear more prominently (New York Times)

New York Times:
Sources: after the election, Zuckerberg agreed to temporarily tweak Facebook's algorithm to make authoritative news like CNN and NYT appear more prominently  —  Employees and executives are battling over how to reduce misinformation and hate speech without hurting the company's bottom line.