The New York Times reports on the spread of paco, a smokable cocaine residue that that is surging in use in Argentina and Brazil.

The scourge underscores a significant shift in both Argentina and its larger neighbor, Brazil, which in just a few years have become sizable cocaine consumers. Brazil now ranks as the second largest consumer of cocaine in the world after the United States, the State Department says.

The surge in drug use has been fueled by porous borders, economic hardship and, more recently, the rolling back of restrictions on coca growing since President Evo Morales took office in 2006 in neighboring Bolivia. The result has been the democratization of cocaine in this part of South America, which has become the dumping ground for cheaper, lower-quality cocaine.

Globally, the cocaine trade is valued at $70.45 billion.