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The greenest building on earth has a brain
The Tower at PNC Plaza in Pittsburgh, Pennsylvania is considered the greenest office building in the world, a structure so complex that one of its designers, Gideon D'Arcangelo of ESI Design, says it's "like a living organism."
Left for dead, rebounding from attack04:59
A 'moral obligation' to stand against Trump03:38
'We had a lot of babies dying'04:55
Beyond the Bars: A former inmate returns to his roots05:58
Flag burning spurs mass arrest at convention04:01
"Trump doesn't speak for African Americans"05:24