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The world's biggest extinction some 250 million years ago wiped out 90 percent of all living things. What caused it has puzzled scientists, and now they think microbes may have done it.

The jazz guitarist and composer has won 20 Grammys and released dozens of albums, but he keeps experimenting.

Methane is a potent greenhouse gas from oil and gas production. The rules require companies to find and repair equipment leaks. The rules also will reduce air pollution that contributes to smog.

A plan to build a $1 billion methanol plant in Clatskanie, Ore. drew a lot of union supporters and quite a few questions at a Port of St. Helens Commission Meeting Thursday.

European scientists were alarmed in 2008 when they discovered streams of methane bubbles erupting from the seafloor in Norway's high Arctic. This gas, which contributes to global warming, was apparently coming from methane ice on the seafloor. A follow-up study finds that methane bubble plumes at this location have probably been forming for a few thousand years, so they are not the result of human-induced climate change. But continued warming of ocean water can trigger more methane releases in the Arctic, with potentially serious consequences to the climate.

Rev. Frank Schaefer presided over his son's marriage to another man six years ago. When his congregation learned about the marriage this year, a complaint was filed with United Methodist officials. The church says same-sex marriage is "incompatible with Christian teaching." Schaefer disagrees.

Previous estimates of the climate-warming gas were based on the rough number of methane-emitting sources on the ground — such as factories, refineries, stoves, swamps, landfills and cattle herds. But by directly measuring levels of methane in the air instead, a new study puts the total much higher.

How best to broach the subject of mental illness?Musical comedy? It may sound weird, but that is the approach of a pair of theater creators from our…

This weekend features three top-10 matchups, the most ever for an opening weekend in college football history. And Arch Manning, the most hyped player of a generation, will start for the first time.

While much of the focus marking 20 years since Hurricane Katrina is on New Orleans, where federal levees failed and flooded the city, the historic storm also decimated the Mississippi Gulf Coast.