Complex sentence: Environment America works to publicize and ameliorate controversial environmental challenges in the United States including the use of renewable energy sources, climate change, water pollution, air pollution, fossil fuel dependency, environmental conservation, and offshore drilling.
Split into simpler sentences: Environment America works to publicize and ameliorate controversial environmental challenges in the United States. Their area of interest includes the use of renewable energy sources, climate change, water pollution, air pollution, fossil fuel dependency, environmental conservation, and offshore drilling.