Blast from the Past:
Really the main money comes from coal companies. They also have the biggest lobby presence and subsidies ( mining, health, rail transport, etc).
Coal has to arm twist the various gov'ts, so their actions to pollute many states & kill many of their worker bees & other citizens, doesn't get advertised enough to force the price of coal upward to reflect its actual economic, social & moral cost to society.
In 2009, A study by the USGS (US Geological Society)
A 2009 scientific study led by scientists from Harvard University and the U.S. Geological Survey, for the first time proved that “Most of the mercury [in fish] originates from atmospheric fallout to the ocean surface and the subsequent transport of the mercury to greater ocean depths.”
They found that the ocean’s mercury levels have already risen about 30% over the last 20 years. Combined, the findings mean the Pacific Ocean will be twice as contaminated with mercury in 2050 as it was in 1995 if the emission rates continue.
For decades, scientists have tried to explain whether the methylmercury in ocean fish is natural or manmade, with some saying it originated in the ocean. USGS geochemist David Krabbenhoft and his colleagues discovered that industrial emissions are transformed into methylmercury in mid-depth ocean waters.
"This study gives us a better understanding of how dangerous levels of mercury move into our air, our water, and the food we eat, and shines new light on a major health threat to Americans and people all across the world,” U.S. Environmental Protection Agency Administrator Lisa P. Jackson said in a statement.
see more at the USGS website http://toxics.usgs.gov/highlights/pacific_mer...
#3 More citations.
--according to the U.S. Environmental Protection Agency (EPA) burning the substance in power plants sends some 48 tons of mercury—a known neurotoxin—into Americans’ air and water every year (1999 figures, the latest year for which data are available). Furthermore, coal burning contributes some 40 percent of total U.S. carbon dioxide emissions.
==The National Academy of Sciences (NAS) estimates that coal mining and burning cause a whopping $62 billion worth of environmental damage every year in the U.S. alone, not to mention its profound impact on our health.