On January 29, 2010, US President Barack Obama ordered the federal government to reduce greenhouse gas emissions by 28% by 2020. The reduction order followed a December 2009 announcement from the Environmental Protection Agency (EPA) that greenhouse gases threatened both public health and the environment, and was part of a broader environmental policy outlined in Executive Order 13514 [PDF]. In order to combat the threat of greenhouse gases, the executive order required the federal government to reduce energy use at federal buildings, invest in renewable energy and operate low emission vehicles. President Obama tasked the White House Council on Environmental Quality with implementing the policy.
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