Former New York Mayor Michael Bloomberg and U.S. Commerce Secretary Penny Pritzker tell Christiane Amanpour why they're hosting the U.S.-Africa Business Forum.
Giant petri dish shows bacteria becoming increasingly resistant to antibiotic: Kishony lab Harvard Medical School & Technion-Israel Institute of Technology
Director Joss Whedon had many of his famous friends -- including Avengers Robert Downey Jr. and Mark Ruffalo -- record a message in support of Hillary Clinton for president.
Iraq is preparing "for the worst," says Haider al-Abadi, "a fight for many months." But he thinks it will be "easier than these other cities outside Mosul."
New York City Mayor Bill de Blasio says stop-and-frisk policing only creates tension between police and communities, and GOP nominee Donald Trump should be wary of supporting the tactic.
Former Philadelphia Mayor Michael Nutter talks about what black communities and police officers are feeling in the wake of two police shootings resulting in the death of two black men.
