"RICHMOND -- The chairman of the U.S. Chemical Safety Board toured the scene of the Chevron refinery fire Monday and released photos of the gigantic vapor cloud that loomed over Richmond before it caught fire."

" ... wouldn't it be lovely if somebody came up with a biofuel that didn't take food out of people's mouths? A few years ago, some people thought they'd found it: A miracle tree called Jatropha. Unfortunately, the miracle turned out to be a mirage."

"THE blackouts that left hundreds of millions of Indians sweltering in the dark last month underscored the status of air-conditioning as one of the world’s most vexing environmental quandaries."

"While Prime Minister Stephen Harper says the fate of Enbridge’s proposed pipeline from the Alberta oil sands to tankers on the British Columbia coast will be based on science and not politics, documents show some of that science isn’t forthcoming. And critics say there is no time for the science to be completed before a federal deadline for the environmental assessment currently underway."

"A retired aerospace executive - appointed to review a study on hydraulic fracturing after it was disclosed the study's author has strong industry ties - has such ties himself."

"BLACKFEET INDIAN RESERVATION, Mont. -- The mountains along the eastern edge of Glacier National Park rise from the prairie like dinosaur teeth, their silvery ridges and teardrop fields of snow forming the doorway to one of America’s most pristine places."

"ANCHORAGE -- Shell Oil's delay in drilling Arctic Ocean exploratory wells off Alaska's northern shores is not due to heavy ice or federal regulators, according to Interior Secretary Ken Salazar."

"The Canadian pipeline company TransCanada has quietly begun construction of the southern leg of the controversial Keystone XL pipeline, installing segments near Livingston, Texas, company officials confirmed Thursday."

"A Canadian company opens a test pit in Utah. But is there enough water to support the industry?"