Yesterday, Congress requested more information about a July 18 explosion in one of the buildings operated by the National Institute of Standards and Technology outside Washington, D.C. There's reason for Congress to raise an eyebrow; based on evidence collected at the scene, investigators suspect that the room was being used to develop illegal methamphetamines.

The explosion occurred in NIST Building 236, far from the majority of the labs, so it didn't damage any research endeavors. It happened in a room that had been emptied of equipment, as one experiment had recently ended and another was slated to begin. The blast occurred on a Saturday, so luckily few employees were around, but it did injure a security guard who was on duty. (He quit his job the day after the incident.)

So the question on everyone's mind is: how was there a meth lab in a government building, and who was operating it?