ANN ARBOR, Mich. (AP) -- Twitter chief executive Dick Costolo is scheduled to deliver the commencement address at the University of Michigan's graduation ceremony in Michigan Stadium.
Costolo is a Michigan alumnus and is to receive an honorary doctor of laws degree at the Saturday ceremony.
Others getting honorary degrees are historian David McCullough, higher education advocate William Brehm, ballet dancer Suzanne Farrell and business leadership expert Rosabeth Kanter.
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