"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.

"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.

"The Obama administration on Monday renewed an interagency agreement that backs the development of biofuels for the aviation industry and reiterated its support for embattled federal renewable fuel targets."

"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."

"The politics of genetically modified food has created a rift in a policy-setting committee of the influential Academy of Nutrition and Dietetics that demonstrates the difficulty in finding anyone — anywhere — who doesn’t already have an opinion on the issue."

The livestock industry, which has been successfully urging state legislatures to pass bills hamstringing exposes of animal cruelty, has a new tactic that hobbles long-term undercover investigations of feedlots and slaughterhouses.

"Both fruits are vulnerable to a nasty disease called fire blight that can devastate orchards. So organic labeling standards allow for antibiotics to be used on apple and pear trees. That exemption is set to end in 2014 -- but growers say they need a little more time."

"Analysis of commercially available rice imported into the US has revealed it contains levels of lead far higher than regulations suggest are safe."

"Listeria in cantaloupes. Salmonella in peanuts. E. coli in spinach. Hepatitis A in green onions. In the past decade a rash of tainted food has resulted in thousands of hospitalizations and hundreds of deaths. It has also prompted the most sweeping reform of U.S. food safety laws in more than 70 years."

"On one covert video, farm workers illegally burn the ankles of Tennessee walking horses with chemicals. Another captures workers in Wyoming punching and kicking pigs and flinging piglets into the air. And at one of the country’s largest egg suppliers, a video shows hens caged alongside rotting bird corpses, while workers burn and snap off the beaks of young chicks."

"The government on Thursday recommended the removal of four hydroelectric dams on the Klamath River in Oregon and California to aid native salmon runs and help resolve a decades-long struggle over allocation of scarce water resources."

"SHANGHAI/HONG KONG --  Chinese authorities slaughtered over 20,000 birds at a poultry market in Shanghai on Friday as the death toll from a new strain of bird flu mounted to six, spreading concern overseas and sparking a sell-off in airline shares in Europe and Hong Kong."

"The so-called 'Monsanto Protection Act,' a controversial provision protecting the biotech giant from litigation, has found an unusual critic in the tea party."

"Scientists taking a first look at the genetics of the bird flu strain that recently killed two men in China said Wednesday that the virus could be harder to track than its better-known cousin H5N1 because it might be able to spread silently among poultry without notice."

"Current climate-induced drought is slipping into a trend that scientists say resembles some of the worst droughts in U.S. history, like the Dust Bowl."