the eyes have it

Have those sneeze attacks and itchy eyes that plague you every spring worsened in recent years?

If so, global warming may be partly to blame. Over the past few decades, more and more Americans have started suffering from seasonal allergies and asthma.

Though lifestyle changes and pollution ultimately leave people more vulnerable to the airborne allergens they breathe in, research has shown that the higher carbon dioxide levels and warmer temperatures associated with global warming are also playing a role by prodding plants to bloom earlier and produce more pollen.

With more allergens produced earlier, allergy season can last longer. Get those tissues ready.

Livescience, 16 Aug 2011