A free-market advocacy group has launched another attack on the science behind U.S. EPA's proposed finding that greenhouse gases endanger human health and welfare. The Competitive Enterprise Institute -- a vocal foe of EPA's efforts to finalize its "endangerment finding" -- petitioned the agency this week to reopen the public comment period on the proposal, arguing that critical data used to formulate the plan have been destroyed and that the available data are therefore unreliable. Go to story #1