"CHARLESTON, W.Va. -- U.S. Labor Department officials blocked an independent state team investigating the Upper Big Branch Mine Disaster from digging into questions about the federal government's response to earlier incidents where methane leaked from the Raleigh County operation's mine floor, newly disclosed records show."

In many places across the country today, manmade pollution and natural contamination of drinking water poser serious threats to people's health. Polls show Americans want such problems solved, and for four decades, the two political parties worked together to protect public health. But now Republicans (and some Democrats) in both House and Senate are trying to pass bills that would end safe drinking water and most other environmental protections.

"House of Representatives will include approval of a Canada-to-Texas oil pipeline in a payroll tax cut bill, House Speaker John Boehner said on Thursday, raising the political stakes on the issue.

The move by House Republicans marked a challenge to President Barack Obama, who has warned he would veto any bill that linked quick approval of TransCanada Corp's Keystone XL pipeline to extending a tax cut for American workers that is due to expire on December 31.

"NAUCALPAN DE JUÁREZ, Mexico — The spent batteries Americans turn in for recycling are increasingly being sent to Mexico, where their lead is often extracted by crude methods that are illegal in the United States, exposing plant workers and local residents to dangerous levels of a toxic metal.

"CHEYENNE - The U.S. Environmental Protection Agency announced Thursday for the first time that fracking - a controversial method of improving the productivity of oil and gas wells - may be to blame for causing groundwater pollution."

"Air concentrations of the brominated chemicals doubled every 13 months in recent years in Cleveland and Chicago."

"America smashed the record for billion-dollar weather disasters this year with a deadly dozen – and counting."

"The Food and Drug Administration must come up with a decision by March 31 on whether to ban a chemical that’s widely used in plastics and the metal linings of food containers, according to a court settlement reached Wednesday between the agency and the Natural Re­sources Defense Council."

"At a hearing in Washington yesterday, lawmakers pressed product safety and health regulators about their three-year investigation into contaminated drywall, expressing frustration with their progress on all fronts."

"An exhaustive new report meant to address public fears about possible links between breast cancer and the environment finds evidence strong enough to make only a few firm recommendations, most already well known and none with a large proven benefit."