"Ignorance is not a virtue," the president told Rutgers University graduates, in an apparent critique of Donald Trump. He called for embracing an interconnected world over building walls.
In his impassioned call for civic engagement, Obama says that race relations have improved but there's more to be done. He advises the historically black university's graduates on shaping the future.
Capt. Nathan Michael Smith, who is currently on active duty in Kuwait, says he is concerned that an "illegal" war "forces him to violate his oath to 'preserve, protect and defend' the Constitution."
The president told an energetic audience he "will not rest" until the city's water is safe to drink. A federal state of emergency has been declared as a result of lead leaching into Flint's water.
Environmentalists opposed to a US-EU trade deal say documents they leaked prove corporations have too much say. But EU officials say that's "flatly wrong."
The president says he hopes to meet Mari Copeny on May 4 when he goes to Flint. She wrote to tell him about her activism on behalf of children affected by the city's contaminated water.
In London Friday, the president also reassured Brits that the residents of North Carolina are "wonderful people" and said any British travelers would be treated with "extraordinary hospitality."
The two nations topping the world in greenhouse gas emissions agreed at the Paris talks to cut way back. But critics have stalled a key part of the U.S. plan, and China's good start may be fragile.