Link:

[Astronaut] Clayton Anderson... heaved a 1,400-pound, refrigerator-size ammonia tank away from the station. His first toss was a 200-pound camera mounting.

NASA normally tries to avoid adding to the orbiting junkyard, but officials felt they had no choice in this case. The equipment had to be removed, and because of a looming 2010 deadline for ending all shuttle flights, NASA does not have room on its remaining missions to return the tank to Earth.

More garbage floating around the earth. But that second paragraph, about no more shuttle flights, makes me sad.