While everyone else is watching the steadily increasing carbon dioxide levels reach and exceed 400 parts per million (0.04 percent of the atmosphere), another group of scientists have been fretting over the Second Greenhouse Gas: methane.
A recent groundbreaking study led by Chinese and American scientists, published in the Proceedings of the National Academy of Sciences (PNAC), documents how pollution from US- outsourced manufacturing in China blows back to California and the West Coast.
Because comets contain large amounts of water and other ices, the notion that bombardments by comets deposited much of Earth's water has seemed to be almost a measure of faith. But a variety of recent studies place this idea into a somewhat harsh context.
On May 11, a group of children will face off against the Obama administration and the NAM, arguing that common law requires governments to protect critical natural resources on behalf of current and future generations.
Rowland was a scientific and environmental hero. But as the Times notes, he demurred from that label -- he just thought he was doing what he had to do, given what he'd learned. Everyone alive can thank him for that.