Oceans and inland waters (lakes, rivers and reservoirs) are increasingly being recognised as critical to addressing many of the global challenges that the world will face in future decades, tend to range from world food security, poverty alleviation and climate change, natural resource provision, improved well-being, and medical care. Blue growth, also known as "blue economy," "green economy in a blue world," or "ocean economy," arose from the 2012 United Nations Conference on Sustainable Development (Rio+20) green economy concept.