Drug lords like La Barbie threaten Mexico's security with American-bought firearms, and finance their violent empires with American drug money.
A stray bullet hit El Paso, Texas, from the Mexican side of the border Saturday. It was the latest spillover of a war on drug barons waged by President Felipe Calderón. After nearly four years, the war needs more than a military solution.
With some 1,200 offshore oil rigs operating today, oil spills are still relatively rare. But experts warn that safety procedures and cleanup methods have not kept pace with drilling at ever-deeper depths.
The cabinet shakeup could signal a hardening of the government's military stand against organized crime.
As its peers in the region see their oil production slipping Brazil's state-controlled oil company Petrobras is entering a new era as the region's silent giant.
The Party of the Democratic Revolution vote Sunday could affirm his aggressive tactics or choose a new leader.
A grass-roots group to monitor air quality has sprouted in one of Latin America's largest industrial corridors.
Should the national oil company allowing private investments? Critics worry about foreign control.