 The transition to a low-carbon future requires significant investments in clean energy technologies, such as renewable energy and nuclear power. In the short term, improving the efficiency of fossil fuel combustion and energy generation can provide an important contribution. Life cycle assessments of the environmental impacts of different energy sources can help decision makers make informed choices when selecting the right technology and applying best practices. For example, when exported to China, liquefied natural gas, LNG, is 22 to 36 times more GHG-intensive than wind and concentrated solar thermal, CST, power, and 13 to 21 times more GHG-intensive than nuclear power. This article was authored by Robert G. Hines, Paul E. Hardesty, and Tom S. Clark.