Science:

When I went to school (girls only) we were all encouraged to be scientists. It was the way the world was going, where new challenges lay, we had the power to improve the world. I'm not sure my own children will see it the same way, although I already see in them an orientation towards science subjects.

Academic scientists (in this country, at least) are paid apallingly badly. A friend was worried when her husband (a father of three) decided to change direction and pursue an academic career three years ago. Even with her contribition to the household they would probably have to move out of their modest home in the over-priced South East of England - at least to get him through the early years of an academic career (starting pay £14,000 at the time).
http://www.ex.ac.uk/EAD/personnel/academic_scales_2000.htm

It's hard to find good science teachers, relatively easy to get places at university with lower grades because most intelligent children understand the nature of the world today. They all want to be ..... lawyers!