moustaches have different cultural associations like for 20th century arab countries they are associated with power. Beards in islamic traditionalism and lackof facial hair is associated with more liberal secular tendencies.
I had noticed that while watching the news, but it is nice to know that it wasn't just in my head. I remember when it meant you were a hippy.
it has many different purposes. in islam trimming the moustache is considered to be "sunnah" and "mustahabb" which means a way of life that is recommended especially amont sunni muslims!
I know that in rural areas in the US it was a way of keeping warm when doing farm work in the winter. My dad always had facial hair in the winter.
yup. is has been with us for a long time and we know because there are moustaches depicted in several acient art forms. for example a statue of 4th dynasty egyption prince rhotep has a mustache :)
I have read some new studies that say humans are getting less hair as we evolve. No genetic need for anymore I guess.
interesting, we have also been shaving for a while. shaving with stone razors was acually technologically possible from even neolithic times. 
ouch, that sounds painful.
Shaving
Shaving is the removal of hair, by using a razor or any other kind of bladed implement, to slice it down—to the level of the skin or otherwise. Shaving is most commonly practiced by men to remove their facial hair and by women to remove their leg and underarm hair. A man is called "clean-shaven" if he has had his beard entirely removed.
Both men and women sometimes shave their chest hair, abdominal hair, leg hair, underarm hair, pubic hair, or
saw their officers' lack of a moustache, beard and sideburns as a lack of manliness. Eventually British officers began to cultivate moustaches and other facial hair to gain the respect of their troops. The trend of sporting a moustache spread quickly through the army and then back home amongst the general British civilian population.
Various cultures have developed different associations with moustaches. For example, in many 20th-century Arab countries, moustaches are associated with power, beards with Islamic traditionalism, and lack of facial hair with more liberal,