The city of Stockholm has ambitious environmental goals for 2012-2015 including efficient transport, reducing pollution, and sustainable energy, land, and water use. Some priorities are increasing cycling, reducing noise and emissions, and purchasing more ecological food. The city aims to be fossil-fuel free by 2050 through district heating, renewable energy, and energy efficiency upgrades. Stockholm manages waste sustainably through recycling, composting, and converting waste to biogas and incineration for energy. Public transport runs on renewable fuels while policies encourage cycling, electric vehicles, and discourage older diesel vehicles.