"The Environmental Protection Agency announced Monday that it would control -- for the first time -- short-lived spikes of an air pollutant common along major roads and linked to respiratory problems."

"A leading congressional Democrat said President Obama needs to 'lay the prestige of the presidency on the line' in his State of the Union address Wednesday and in the months to come on climate change."

Many U.S. homes could be made far less expensive to heat and cool -- reducing greenhouse emissions in the process.

"Americans today receive far more medical radiation than ever before. The average lifetime dose of diagnostic radiation has increased sevenfold since 1980, and more than half of all cancer patients receive radiation therapy. Without a doubt, radiation saves countless lives, and serious accidents are rare. But patients often know little about the harm that can result when safety rules are violated and ever more powerful and technologically complex machines go awry."

"Americans are exposed to thousands of chemicals that are potentially harmful to their health, according to a broad coalition of labor, health, and environmental organizations calling for tougher federal toxics regulation."

"New rules for lead paint removal go into effect April 22, adding a bit more time and cost to some home renovations."

Increased use of the poison Rozol to kill prairie dogs is harming many non-target species.

Measured temperatures offer evidence of manmade global warming that belie the increasing success of deniers funded by fossil fuel industries in damaging public confidence in science.