With a tiny budget, the U.S. Chemical Safety Board is coming under fire for slowness in completing investigations on a large number of major accidents involving chemical hazards.

"A massive explosion at a fertilizer plant rocked the town of West, north of Waco, causing multiple casualties and leaving people trapped and buildings on fire.

Emergency personnel were bracing for the possibility of dozens of dead in the blast, which was reported at 7:53 p.m. and could be heard 45 miles away in Waxahachie.

Although authorities confirmed that at least five to 15 people had died, shortly before 5 a.m. they were still saying they did not have an official total. They have said they expect to find more bodies as they continue to search the area."

"WASHINGTON -- The Obama administration’s nominee to lead the Environmental Protection Agency declined on Thursday to answer questions about a controversial new guide that suggests public health standards could be relaxed dramatically in the event of a nuclear attack or accident."

"The fire that destroyed part of Chevron's Richmond refinery happened because weak state regulations allowed the company to monitor rather than simply fix potential problems, federal investigators said Monday."

"MAYFLOWER, Arkansas -- Warren Andrews had just finished putting up balloons for his stepdaughter's 18th birthday party at their suburban home in Mayflower, Arkansas, when his wife came inside and said something was wrong."

"WASHINGTON, DC -- The U.S. Nuclear Regulatory Commission should look at evacuation plans for areas beyond a 10-mile radius around America’s nuclear power plants, the independent research branch of Congress advised Wednesday."

"WASHINGTON -- Last year's huge drought was a freak of nature that wasn't caused by man-made global warming, a new federal science study finds."

"High winds and heavy snow and rain whipped through parts of the central United States on Wednesday, knocking out power for thousands of people and closing schools and businesses."

"Edison International’s request for a license amendment for a proposed restart of its crippled California nuclear reactor doesn’t pose significant safety risks, federal regulators said in a preliminary finding."

"The 2013 Atlantic hurricane season will be 'above average' with 18 tropical storms, nine of which will intensify into hurricanes, forecasters at Colorado State University predicted on Wednesday."