I shall have to leave it to you to do the relevant sums, but this news item from today's Times gives something to go on. What interests me is that, in terms of extra earning power, biology does not count as a science. You have to go for Phys and Chem. I wonder how much PricewaterhouseCoopers charged for their research, and how Classics would fare if our organisations commissioned a similar survey. After all, the RSC and IoP asked for this one, and got the answer they were presumably looking for! Here's the item:

Chemistry and physics graduates in the UK earn more throughout their lifetime than those graduating in the arts, according to a new report.

Science graduates can expect to earn around £187,000 (30%) more during their careers than those with just A-levels, whereas biological sciences, linguistics and history graduates only earn up to 16% more.

The report from PricewaterhouseCoopers (PwC), commissioned by the Royal Society of Chemistry (RSC) and the Institute of Physics (IoP), and published last night, comes amid growing concern about the state of science provision in universities following a number of department closures.