Five things you need to know today, and some things I learned while overseas

Good morning, Boston. RIP, Burt Bacharach. Here are the five things you need to know in Boston business news to start your Friday.Magenta cuts 85% of staffRowan Walrath reports that Magenta Therapeutics Inc. is laying off the vast majority of its staff, including five executives.Kendall Sq. garage demolitionBoston Properties Inc. began demolishing a large parking garage in Cambridge’s Kendall Square recently, the first step on a years-long, billion-dollar path to build a research center&he