CMU graduate student Richard Hang with his "CoBot." The "CoBot" is a service robot designed to travel through hallways and perform administrative tasks, such as delivering mail or relaying messages.
Credit: Mark Peterson/Redux
It's hard to pinpoint the moment Pittsburgh began its three-decade climb back from the dead, but Red Whittaker marks the comeback from the instant he heard the ominous clack of a door closing behind him when he entered a secured building near the melted heart of Three Mile Island back in 1983.
From Politico
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