Air-con on...

One for the "stating-the-bleedin'-obvious" collection.  A couple of Dutch scientists have worked out that your average office air conditioning unit is set at a temperature which is comfortable for men, but a little too chilly for women.  They explain this by pointing out that women have a lower metabolic rate than men, but surely it's simpler than that - it's just a matter of dress.  Most offices still require men to work in a suit, shirt and tie, whereas women tend to go for more lightweight gear, like skirts and blouses, so naturally they feel the cold more.  A jumper usually does the trick.