Day: May 17, 2011

The idyllic cross-country train trips that many Americans still take could get derailed by today’s “slash and burn” federal budget policies. Meanwhile, fears for the safety of rail passengers in the post-bin Laden era are drumming up political support for costly security measures and raising, once again, questions about why the federal government funds rail routes without any promise of profitability.

Gerontologists in a laboratory at the University of Southern California exposed a group of mice to the same atmospheric conditions that humans encounter when driving along the freeway. Horrifyingly, they discovered that the mice’s brains showed the kind of swelling and inflammation associated with diseases such as Alzheimer’s. The researchers didn’t super-dose to get these results: The mice were exposed to freeway air for the equivalent of 15 hours a week -- less than the 18.5 hour average Americans spend in their cars. Jokes aside about getting those darn mice off the road, the study suggests that driving less may reduce our risk of brain damage.

More headlines at Streetsblog Capitol Hill