Limiting global warming to below 2°C above pre-industrial levels will require massive reductions in greenhouse gas (GHG) emissions from business-as-usual—on the order of 40 percent to 70 percent in 2050 compared to 2010, and near net zero emissions by 2100.

Water scarcity challenges industries around the world. Global population growth and economic development suggest a future of increased demand, competition, and cost for limited freshwater supplies.

The United States will need new legislation to achieve its long-term target of reducing greenhouse gas (GHG) emissions by more than 80 percent by 2050.

Growing from 6 operators in 2012 to 41 by mid-2015, carsharing is rapidly expanding in emerging markets worldwide. What is the future of carsharing? What impact will this innovation have on cities? What are the key challenges for ensuring that carsharing becomes a vehicle for sustainable mobility?

The post-2020 international climate regime will require all countries to significantly scale up their efforts to reduce emissions, while at the same time increasing their resilience to the impacts of climate change.

Focusing on micro and small enterprises (MSEs) is critical to climate change adaptation because these businesses provide livelihoods for the world's poor, who are particularly vulnerable to climate change, according to a report by the UN Development Programme (UNDP) and the World Resources Institute (WRI).

Developing countries need significant amounts of finance to help them adapt to the changing climate and follow a path of low-carbon development. The international community has set up multilateral funds to help support climate change mitigation and adaptation in these nations.

This technical note outlines the methodology, data sources, and calculations used to quantify the post-2020 clean energy plans of Brazil, China, the European Union, India, Indonesia, Japan, Mexico, and the United States. These countries/regions collectively account for more than 65 percent of the world’s primary energy demand.

High rates of motorization and urbanization, particularly in developing countries, underpin strong growth in the transport sector. Global investment in transport infrastructure is expected to increase by more than 50 percent to meet demand over the next two decades.

A new report by World Resources Institute and University of Sao Paolo’s Institute of Energy and Environment finds that Brazil could change its energy mix and move toward a lower-carbon economy by modernizing transport, improving renewable energy capacity and increasing industrial efficiency.