This article from the United States Global Change Research Program is about some inconvenient truths:
Some charts –like this one included in this report– are so explicit in so little space (in the PDF download is bigger):

See how the petroleum, natural gas, and coal generation consumption has steadily increased in the las 60 years? See how hydroelectric power and biomass, have not shown any increase in the same period of years? Where is inertia that is stopping us from taking consciousness from this problem?
This chart is about how the petroleum consumption has been steadily increasing while the hydropower generation has maintained its level for the past 60 years.
Download this report from the U.S. Global Change Research Program [8 p. 1 MB].