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Today's sustainability indicator, 77 cents, is the amount of income women in the U.S. receive for every $1 paid to men for the same work. The median income for men was higher in all but one of 265 occupations in 2010.
This month's indicators:
70%: proportion of world's population that will be living in urban areas by 2050.
50%: world's population currently living in rural areas. $5 trillion: global investment in clean energy by 2020 to contain climate change. $409 billion: worldwide government subsidies given to the fossil-fuel industry in 2010.$66 billion: global subsidies for renewable energy in 2010. $90 billion: wealth of the richest 70 members of China's National People's Congress.$7.5 billion: wealth of all 660 top officials in the three branches of U.S. government.134: earthquakes last year in central U.S., where seismic activity is linked to fracking.21: average annual earthquakes in central U.S. in the three decades prior to 2000. 13 million tons: CO2 emissions saved by Wal-Mart's recycling and waste-reductions last year.2.3 million: cars needed to be taken off the road to reduce CO2 emissions by 13 million tons.240 gigatons: mass lost from the Greenland ice sheet each year from 2002 to 2012. 0.7 millimeters: annual sea level from the melting Greenland ice sheet.61 percent: amount of Spain's electricity demand that was met by wind power on April 16.396.53 parts per million: carbon dioxide in the atmosphere as of April 14. 350 parts per million: maximum CO2 before environmental damage from climate change. 130 billion pints: beer consumption expected in China in 2016.29%: increase in China's 2016 beer consumption over 2011. $1 trillion: worldwide investments in renewable energy through 2011.82%: decline in solar panel prices since August 2009.117,182: electric cars and hybrids vehicles sold globally last quarter. 49%: rise in electric and hybrid sales compared with the same quarter a year ago.$260 billion: global investment in renewable energy in 2011.$54 billion: investment in renewables in 2004.73.3 gigawatts: additional global wind and solar capacity planned for 2012.55 million: U.S. homes powered by 73.3 gigawatts.2 billion: people expected to be added to the Earth's population by 2050.80%: additional energy capacity needed for anticipated energy needs in 2050.15,000: temperature records broken in the U.S. in March. Visit www.bloomberg.com/sustainability for the latest from Bloomberg News about energy, natural resources and global business.