1BillionHours

http://1billionhours.com

We're inspiring High School, College and University Students across North America to take the 1BillionHours 1HourChallenge Pledge, Choose a Cause or Charity Volunteer Opportunity on our site (or one that matters to them) and give Hours to their Cause on December 3rd, and track their Volunteer Hours that evening, so that we can share their Hours towards Giving Tuesday with the World.