New undercover videos of cruel treatment of pigs in a facility raising them for meat raised questions that resonated across the US meat industry.

"It’s the kind of scenario that might evolve in Hollywood: A college professor detects drug-resistance genes collecting in local wetlands, where they survive for weeks and are spread far and wide by seabirds.

But the discovery of extra-hardy DNA flourishing on the edge of San Diego isn’t science fiction. It’s the result of research by David Cummings, a microbiologist at Point Loma Nazarene University.

"Plants are flowering faster than scientists predicted in response to climate change, research in the United States showed on Wednesday, which could have devastating knock-on effects for food chains and ecosystems. Global warming is having a significant impact on hundreds of plant and animal species around the world, changing some breeding, migration and feeding patterns, scientists say."

"Some of the main proposals in a draft text for negotiation at a U.N. sustainable development conference next month are being watered down at informal talks in New York, observers said on Tuesday, heightening fears the summit will fail to deliver."

"WASHINGTON -- Biotechnology's promise to feed the world did not anticipate 'Trojan corn,' 'super weeds' and the disappearance of monarch butterflies."

"Get ready for the heat. Scientists at Stanford University in California and Purdue University in Indiana say global warming is going to hit hard in Corn Belt states where it most matters -- the corn market. The study, financed by the U.S. Department of Energy, says that the corn market will be walloped in the coming years by climate change."

The US Agriculture Department's Wildlife Services agency, at farmer request, kills predators that may harm farm animals. But critics say it does serious harm to non-target species and uses needlessly cruel and indiscriminate methods.

"Federal officials have been quick to reassure the public that there is no health threat from the mad cow disease discovered in the carcass of a Tulare County dairy cow. But there is a lot they don't know about the type of infection in that carcass -- including how the cow got the disease, how long it was ill, and the risk to the public if that strain gets into the food supply."

"OTTAWA - The Conservative government is using its massive budget bill to update Canada's food regulations so new health claims, food additives and chemical contamination caps can be approved much more quickly."