deadly smog

Smog-related deaths from climate change are projected to increase by about 4.5 percent from the 1990s to the 2050s, according to studies at Columbia and Johns Hopkins universities.

A scientist at Yale University, Michelle Bell, looked at the 50 largest cities in eastern United States and found that the health-alert days would go up by 68 percent over the next decades.

SFGate, 17/4/07

see also – just plain scary