Yelp

In a new partnership with Yelp, ProPublica has been given unprecedented access to the rating site’s 1.3 million reviews of health-care providers. One dental chain attracted 3,000 reviews, the vast majority bad.

• By Charles Ornstein

With access to books, movies, and television more open than ever, and research showing that crowdsourcing leads to biases, cultural criticism needs to change.

• By Adam Waytz