National (U.S.)

"The chairman of the Nuclear Regulatory Commission was invited to the White House briefing today to assure Americans that they had nothing to fear from the nuclear radiation coming out of Japan's damaged reactors and that the nuclear reactors in the United States were safe. When he was finished taking questions there was very little reassurance on either front." In Japan, residents are beginning to wonder whether they can trust government reassurances that radiation levels present little threat to human health.

"In the debates about the prospects for a U.S. nuclear power rebirth, there was one thing advocates, foes and regulators seemed to agree on: The industry could not afford another Three Mile Island accident."

The aging fleet of US nuclear power reactors have some technological similarities to the reactors failing in Japan. Could similar loss-of-cooling events happen at some US reactors — whether caused by earthquake, tsunami, terrorist attack, electrical outage, flooding, equipment failure, or some other problem?

Environmental Protection Agency Administrator Lisa P. Jackson in in the hot seat as House Repulicans assault EPA trying to get the agency to back off of regulalations that control pollution but cost business.

"Early adopters of battery powered cars say they are satisfied with their purchases, despite some hassles."

"Recent research raises new concerns over the toxic substances borne aloft in wood smoke. Scientists say the tiny airborne specks of pollution carry carcinogenic chemicals deep into lungs and trigger DNA damage and gene changes comparable to the hazards of cigarette smoke and car exhaust."

"The Transportation Security Administration announced Friday that it would retest every full-body X-ray scanner that emits ionizing radiation — 247 machines at 38 airports — after maintenance records on some of the devices showed radiation levels 10 times higher than expected."

"So many people surged to the West Coast and Alaska Tsunami Warning Center website that it slowed to a crawl early Friday, unable to provide critical information to the public about the coastal impact in the U.S. of a massive earthquake in Japan."

"The official announcement that two reactors at an earthquake-damaged nuclear plant could be suffering meltdowns underscores the Japanese nuclear industry’s troubled history, and years of grass-roots objections from a people uniquely sensitive to the ravages of nuclear destruction."