The Gulf oil spill may well be the greatest environmental disaster of our time and we’re yet to feel the full impact of its aftermath. Cleaning up the mess is one slow but important step towards recovery and creative outfit Happiness Brussels — they of social media talking tree fame — are making a lovely effort towards it. They’ve created Oil & Water Do Not Mix — a limited edition of 200 posters screen-printed with oil from the Gulf disaster, collected on the beaches of Louisiana’s Grand Isle and benefiting the region’s restoration.

Each poster is signed by London-based designer Anthony Burrill and all proceeds go to nonprofit Coalition to Restore Coastal Louisiana.