Chicago river dyed green in St. Patrick's Day tradition
Tour boats travel the Chicago River after workers dyed it green to kick off the city's St. Patrick's day celebration on March 16, 2013 in Chicago, Illinois. The dying of the river has been a tradition in the city for 43 years. (Getty Images)
From underwater mining to luxury yachts, Mohammed Al Barwani has interests in a staggering range of industries. The chairman of MB Holding explains how he built the firm from scratch to become a billion-dollar player.