The science behind growing facial hair

November has been rechristened "Movember" in many places. Men spend the month growing moustaches and other facial hair as a method of raising money and awareness of prostate cancer.

So it's a good month to find out that not everyone can grow a good 'stache, or a beard.

Science columnist Torah Kachur has looked into the reasons for this inequality. Click on the link below to hear her speak with Dave.