"WASHINGTON — The White House says a new environmental assessment from the State Department isn't the last step in deciding whether the Keystone XL pipeline can be built."

"ST. PIERRE-JOLYS, Manitoba — Several thousand people in southern Manitoba have been told that a pipeline explosion could mean they will be without natural gas service for up to several days as temperatures dip below zero."

"The National Transportation Safety Board called Thursday for federal regulators to take more aggressive steps to protect the public and the environment from oil spills and fires from trains."

"The groups are objecting to the approval granted Northern Gateway last month by the Joint Review Panel. The panel, which held 18 months of hearings into Northern Gateway, concluded the project posed little risk to the environment provided Enbridge complied with 209 conditions attached to the approval."

"EDMONTON - The study of how oilsands pollution is affecting the massive peatlands in the northeast will come to an abrupt halt this spring as two scientists found out last week their funding has been cut."

"VANCOUVER, British Columbia -- Five environmental groups are taking the Government of Canada to court today claiming that it has failed to meet its legal responsibilities under the Species at Risk Act to protect endangered wildlife threatened by the proposed Enbridge Northern Gateway pipeline and oil tanker route."

"TORONTO -- Canadian health officials said Wednesday a fatal case of H5N1 bird flu has been reported in Canada, the first such case in North America. The victim was travelling from China when symptoms first appeared."

Sometimes hydraulic fracturing of underground shale formations to produce oil and gas goes awry. Pumping fluids into formations at high pressure to release hydrocarbons can cause oil, gas, and toxic liquids to spew from old abandoned wells.

"Several homes near the village of Plaster Rock, N.B., were evacuated Tuesday evening after a train carrying 'dangerous goods' derailed and caught fire."