Most Recent Trends
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Having nearly tripled from 2.5 billion people in 1950 to 7.3 billion today, human population will continue growing through 2070, according to two recent demographic projections. After that, population either will begin to shrink or will continue growing into the next century, depending on which of the two projections more accurately forecasts the future.
Global energy intensity decreased 0.19 percent in 2013. That may not seem all that impressive, but considering that energy intensity increased steeply between 2008 and 2010, this small decline continues a much-needed trend toward lower energy intensity, which basically means that people are using energy more efficiently.
Carbon dioxide (CO2) is the main contributor to climate change. In 2013, the global combustion of fossil fuels and the production of cement resulted in the emission of 36.1 billion tons of CO2, which was 61 percent over 1990 levels.