A little more than a year ago, on a trip to Nairobi, Kenya, some colleagues and I met a 12-year-old Masai boy named Richard Turere, who told us a fascinating story. His family raises livestock on the ...

Editor's note: This is the second in a two-part series about the colorful "Colonel" William C. Greene, who is credited with developing mines in Cananea, Sonora. The years 1899 through 1906 were ...