This story caught my eye. The New York Times outlines how each blood donation, paid out at $30 a pop, generates $300 in pharmaceutical products.

Blood donation centers concentrate in extremely poor areas, with high health issues including drug addiction.

So, get this, Mexicans are crossing the border twice a week to donate blood, to earn $60 a week. It's more money than what they can make on wages in Mexico!

Twice a week, Ms. Delgado, the mother of three young girls, walks across the bridge from Piedras Negras, Mexico, where she lives, to Eagle Pass and enters a building just two blocks from the border.

Inside, for about an hour, Ms. Delgado lies hooked to a machine that extracts plasma, the liquid part of the blood, from a vein in her arm. The $60 a week she is paid almost equals her husband’s earnings.

“This is like another income,” she says.