The resignations of seven Brazilian cabinet ministers over corruption charges since President Dilma Rousseff took office are the tip of an endemic problem which experts say hobbles the country's bid for great power status.
[ Watch the Video ] Breathtaking images taken from outer-space by NASA's Operation IceBridge -- the largest airborne survey of Earth's polar ice ever flown -- reveal a 19-mile long, 195 ft.-deep crack across a floating ice shelf in Antarctica that could produce the world?s largest iceberg. The rift was first discovered last October, but IceBridge scientists returned soon after to obtain the ...