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1. Kennedy School dean David Ellwood introduces President Sirleaf.
2. Graduation Address
President Ellen Johnson Sirleaf, M.P.A. '71, of Liberia, Africa's first elected female president, delivers the 2008 graduation address at the Harvard Kennedy School.
Stanford political scientist Jeremy Weinstein set to lead
The Office for the Arts turns 50, and its longtime director steps down.
Nonie Lesaux will serve as dean during the search for a new one.
A new Harvard course on artificial intelligence teaches students how to use the tool responsibly.
Homes of the poet and abolitionist, whose verses were said to have inspired Abraham Lincoln.
