When a baby's head is stuck in the birth canal for an extended period of time, it cuts off the blood supply to the woman's surrounding organs.

VOA: special.2010.08.09

"This would cause a global catastrophe wherever it hit the Earth, via a climate change, and this would lead to a rapid cut-off of the food supply and ultimately within a few months to a loss of probably a quarter of the world's population, " he told BBC radio.

BBC: You are in: Sci/Tech

The French aim is to cut off their lines of supply, helped by Algeria's reinforcement of its border security.

CNN: Mali: The long, troubled desert road ahead

Apple lost ground when it choked off the supply of the original iPhone ahead of the launch of this 3G version.

FORBES: 3G iPhone: Calling The World