Articles by Grist staff

Umbra on jet streams

Dear Umbra, Why does the jet stream move from west to east? Joe Pittsburgh, Penn. Dearest Joe, To get a decent bagel? Image: NASA. There are actually two main global jet streams, the “polar” in the Northern Hemisphere and the “subtropical” in the Southern Hemisphere. The ridiculously simple answer to your question is that jet […]

Salem Switch Trials

Massachusetts is sticking to its guns on clean air, Gov. Mitt Romney (R) announced this morning. The state refused to extend a deadline for heavily polluting power plants to reduce their emissions, meaning they’ll have to clean up their acts by 2004. In 2001, then-acting Gov. Jane Swift (R) imposed the deadline on the state’s […]

Military Might What?

After failing last year to wrest from Congress a wholesale exemption from many environmental laws, the Pentagon is trying to rally public support for its campaign this year. The Defense Department says that laws such as the Endangered Species Act have interfered with training and other programs in the past. It’s a hassle to have […]

No Credence to Clearwater Revival

Stormwater runoff flowing into restored Seattle-area creeks and rivers appears to be killing salmon, according to a groundbreaking study by the U.S. National Marine Fisheries Service. Eighty-eight percent of coho salmon studied last fall died within hours of swimming into a stream that was being inundated by runoff. Rainwater pours off streets, roofs, and parking […]