keep off the concrete!

Recent research suggests that global warming will also exacerbate respiratory allergies, as higher CO2 concentrations lead to vast increases in ragweed pollen production.

“There’s no denying there’s a change,” says Paul Ratner, an immunologist with the American College of Allergies. “It’s definitely bad news for people who have allergies.”

“Urban places, because of the baking effect of that increased concrete, definitely pollinate more,” says Ratner.

It doesn’t help that warming will also increase the production of ground-level ozone, a respiratory irritant that worsens asthma.

Time, 15 Sep 2008