1/3 of homeless people in the US are under the age of 18.
To help out homeless teens, the teen clothing chain Aeropostale is donating 10,000 pairs of jeans homeless teens. They're also collecting gently worn jeans, just bring them to any Aero store to drop them off.
The jeans can be any size and any brand as long as they're gently used, and as an added bonus, Aero will give you a coupon for 20% off a new pair of jeans.
Aero stores are located in almost all US states, and the collection is going on until Febuary 10 so get busy cleaning out your closet!
More info is available here:
http://www.teensforjeans.com