"BEIJING — A week of protests against the planned expansion of a petrochemical plant in the port city of Ningbo turned violent on Friday and Saturday when demonstrators attacked police cars and tossed bricks and water bottles at officers, according to accounts from participants posted on the Internet."

"LONDON — BP returned to profitability with a better-than-expected third-quarter profit, prompting the oil giant to raise its dividend."

"Heart attacks dropped by one-third in one county in Minnesota after two smoke-free workplace ordinances went into place, a new study shows."

"The devastating U.S. drought and ensuing crop disease are upending traditional grain movement patterns, with dozens of trains and barges shipping North Dakota or Mississippi corn into the Corn Belt rather than out to the coasts."

"LARAMIE, Wyo. -- The idea behind the sculpture that appeared on the University of Wyoming campus about 16 months ago was simple but provocative: a swirl of dead wood and lumps of coal, intended to show the link between global warming and the pine beetle infestation that has ravaged forests across the Rockies."

"It’s been a banner year for extreme weather conditions, from the drought that held the country hostage this summer to superstorm Sandy. But then, last year was a banner year for extreme weather too. And the years before that …"

"The Macondo well blowout on the floor of the Gulf of Mexico lays bare just how little scientists know about that great expanse of saltwater and its creatures, but in fishing communities from Florida to Louisiana, some people have vital questions of their own."

"WASHINGTON -- Parts of two nuclear power plants were shut down late Monday and early Tuesday, while another plant — the nation's oldest — was put on alert after waters from Superstorm Sandy rose 6 feet above sea level."

"Though the presidential campaigns have been focused on Hurricane Sandy, the politically sticky topic of disaster relief is making its way to the forefront. With Sandy bearing down on the East Coast, supporters of President Barack Obama are saying that Republican presidential nominee Mitt Romney would gut FEMA, leaving it incapable of handling a massive hurricane or tornado."

"As Hurricane Sandy churned inland as a downgraded storm, residents up and down the battered mid-Atlantic region woke on Tuesday to lingering waters, darkened homes and the daunting task of cleaning up from once-in-a-generation storm surges and their devastating effects."