The world’s social and environmental problems are too grand for the public or private sectors to tackle alone. Energy, water and air quality concerns, as well as issues of waste and social equity, require the combined strengths of governments, businesses and non-profits to be properly addressed. Although the public sector has policymaking powers and access to abundant data, it often lacks the financial and intellectual capital to take effective action alone. The private sector may have money and the technical know-how, but it relies on the public sector to create the opportunities and incentives for innovation. That is why public-private partnerships have emerged as an effective tool for making the best of both worlds. These are agreements between a public agency and a private-sector entity that leverage the particular skills and assets of each sector for the delivery of a service or facility used by the general public. In addition to sharing resources, the partners also share in the risks and reward potential in the delivery of the service or facility. At every level of governance — international, national, provincial and municipal — public-private partnerships are empowering public entities to meet their sustainability objectives while also benefiting business. See below five public-private partnerships helping to do just that. ———— This post was taken from the article ” 5 PUBLIC-PRIVATE PARTNERSHIPS PUSHING THE SUSTAINABILITY ENVELOPE “ , Greenbiz.