"In the months before last week's deadly fertilizer plant explosion in Texas, U.S. government watchdogs criticized federal oversight of facilities that make or store dangerous chemicals."

"Underfunded agency faces the challenge of finding answers to key questions: When did Exxon's pipeline rupture and when did the company learn of the spill?"

"Few Torontonians know there are oil pipelines beneath the city and that Enbridge has applied to make significant changes to one of them."

"WASHINGTON -- Cleanup workers, doctors, divers and Gulf Coast residents interviewed by a Washington watchdog group have reported health problems from the 2010 Gulf of Mexico oil spill, including blood in the urine, heart palpitations, kidney and liver damage, migraines, memory loss and reduced IQ."

"CLARKSVILLE, Mo. -- The fast-rising Mississippi River was making travel difficult Saturday, both on the river and for those simply trying to get across it."

"TALLAHASSEE -- The state of Florida filed a lawsuit Saturday against the oil company BP and the cement contractor Halliburton over the Deepwater Horizon oil spill, becoming the fourth state to seek damages for the 2010 disaster."

"Tokyo Electric Power Co. refuses to pay 10.55 billion yen ($106 million) for decontamination work around its crippled Fukushima No. 1 nuclear plant, saying it is under no legal obligation to do so."

"State and federal  investigators on Sunday began their  first in-depth look at the cratered epicenter of a fertilizer plant explosion that killed at least 14 people, including about 10 volunteer firefighters and the residents who tried to help them extinguish a fire at the site."

"Record-setting rains in parts of the Midwest have caused hundreds of flight cancellations and flooding, with one northern Illinois hospital evacuating patients due to rising floodwaters."

"WEST — In this small, shattered town 80 miles south of Dallas, residents awaiting word on missing loved ones spent most of Thursday finding hope in not knowing for sure.