June 19, 2013 -- Updated 1713 GMT (0113 HKT)
Mark Quarterman says the slaughter of elephants for their tusks is at its worst in decades. As demand for ivory soars in Asia, Africa's vicious militant groups are killing elephants to pay for their arms and ammunition.
Yury Fedotov says progress has been made but not fast enough to help millions of trafficking victims
George Gascon, a former police chief, says immigrants are less likely to report if they are victims of crimes if they fear police. It's in law enforcement's interest to bring them out of shadows
Wendy Weiser says the Supreme Court's ruling on Arizona voting restrictions was a win for voters, but why stop there? It's time to modernize the U.S. election system
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