The challenge:In 2011 it was estimated that 60 million used tyres could be found on South African soil – more tyres than people. With a further 11 million new tyres entering the market each ...

The challenge:Cooking oil waste can be a serious pollutant if it is not properly disposed of. Every litre of oil that enters the rainwater drainage system contaminates 20,000 litres of water, and, ...

The challengeTaipei City currently has three municipal solid waste treatment incinerators, and one sanitary landfill, allowing for waste downcycling. Due to limited space and a dense population, there...

The challenge:Planners of Hammarby Sjöstad eco-city aimed to reduce energy consumption and waste generation while maximising resource saving, reuse of materials and recycling. Regarding municipal...

The challenge:Aluminium cans and PET plastic bottles contain valuable materials that can be easily recycled. In Hungary, these materials are the most common beverage packaging, but collecting and ...

The challenge:Much of the material that ends up in landfill could have been recycled, or better, reused. This is especially true for larger household items such as furniture which have often not ...