40,000 volunteers turned up to help him in that first year, and from there the idea spread pretty quickly. Now it's the biggest community-based environmental event in Pakistan, and it's even travelled overseas, with an estimated 40 million people helping out across 130 countries! The first Schools Clean Up Day was in 1992. And since then, kids from nearly 50,000 schools around Pakistan have collected a massive amount of rubbish! About 3,400 ute loads in fact! But there's still plenty of trash to pick up, and these guys know just how important it can be to throw something in the bin.