A group of volunteers set about collecting cigarette butts in Brussels to highlight the extent to which people simply throw them to the ground.

A group of 240 volunteers, they claim to have collected 270,000 butts in just 3 hours. An academic article published in the Tobacco Control journal in 2011 states that cigarette butts are the most commonly collected waste item, and that they constitute 25-50% of all littered collected from the streets.