Ooooh, ooh, oooh!

This is my excuse to spring this one on this bunch of bright people.

The choices are

1) The Rolling Stones

2) Dire Straits

3) Black Sabbath

The category is Science. Trivia question for the week of January 27th 2001 - February 2nd 2001

Which is the correct answer and what is the question? Please do not give away the question (or the answer) in the Subject Line.