The word science probably conjures up images of fat textbooks, Bunsen burners, white lab coats and microscopes, not Irish dancing germs, giant poo floating in front of your face and human-sized bacteria.
Johnson wants to make it clear that his experience with drugs did not involve test tubes and Bunsen burners. Nevertheless, he says, such "experimentation" does refute certain hypotheses about the consequences of drug use.
Instead of dealing with beakers, test tubes, and Bunsen burners, scientists could simply inject a small sample into a machine containing a microchip and wait a few minutes for the results to appear on a computer screen.
Last night, Carmarthenshire county councillor John Jenkins, a governor at the Dafen-based school, said he believed the staff were affected by a gas leak in a valve serving bunsen burners in the school laboratory.