George Bush is working at a breakneck pace to dismantle at least 10 major environmental safeguards protecting America's wildlife, national parks and rivers before he leaves office in January.
With barely 60 days to go until Bush hands over to Barack Obama, his White House is working methodically to weaken or reverse an array of regulations that protect America's wilderness from logging or mining operations, and compel factory farms to clean up dangerous waste.
In the latest such move this week, Bush opened up some 800,000 hectares (2m acres) of land in Rocky Mountain states for the development of oil shale, one of the dirtiest fuels on the planet. The law goes into effect on January 17, three days before Obama takes office.
The timing is crucial. Most regulations take effect 60 days after publication, and Bush wants the new rules in place before he leaves the White House on January 20. That will make it more difficult for Obama to undo them.
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