The EPA will unveil a proposal as early as Tuesday to scrap a landmark determination that planet-warming gases endanger public health and welfare, sources said.

The U.S. Environmental Protection Agency plans to reverse its scientific determination that greenhouse gas emissions endanger public health, removing the legal foundation that underpins all major climate regulations,

WASHINGTON - The Environmental Protection Agency is reportedly preparing to rescind its endorsement of a landmark 2009 report that says greenhouse gas emissions endanger human health. The report forms the basis for many of the EPA standards against air pollution.