Greenhouse Effect

WASHINGTON - The Obama administration took a major step Monday toward imposing the first federal limits on climate-changing pollution from cars, power plants and factories, declaring there was compelling scientific evidence that global warming from manmade greenhouse gases endangers Americans' health.

WASHINGTON - The Environmental Protection Agency took a major step Monday toward regulating greenhouses gases, concluding that climate changing pollution threatens the public health and the environment.

NEW DELHI - India will significantly slow the growth of its climate-warming carbon dioxide emissions over the next decade as its economy keeps expanding, an official said Thursday ahead of world climate change talks.