Lingering questions of the Earth Summit, held shortly after the end of the Cold War in Rio, June 1992, still persist as a result of discord and reluctance among nations. ... About 40 percent of the world's population still depends on conventional forms of fuels such as dung or wood, which is known to produce the largest amount of toxic elements. ... It is reported that Los Angeles, one of the world's most industrialized cities, reduced the amount of pollutants in the air by half during last 25 years while the city's population growth has doubled. ...

• Word Count: 1769
• Approx Pages: 7
• Grade Level: Undergraduate