An unidentified substance has killed or injured hundreds of birds so far.
Natural gas is often called a "bridge fuel" that will help ease us off of carbon-based energy. But a study suggests that without policies to push us toward renewables and away from fossil fuels, natural gas will still leave the sky as a waste dump.
U.S. could make substantial reductions in greenhouse gas emissions by stopping methane leaks from natural gas pipelines, says a new Stanford study.
The obscure rare-earth metals turn out to be unexpectedly essential to life in hot volcanic mud--and probably elsewhere.
NASA's Curiosity rover on Mars has raised some eyebrows by something it has not detected: methane. And, much farther out, the Cassini spacecraft has made a positive detection of plastic in the atmosphere of Saturn's moon Titan.