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  1. Earth

    Crisis on Tap?

    Because people are becoming ever more dependent on underground aquifers as sources of water, scientists are striving to understand better how groundwater systems interact with the water that flows across Earth's surface.

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  2. 19084

    This article confirms what food-allergic persons have known for quite awhile, that food allergy reactions are not provoked only by ingestion. Another kind of kiss can cause reactions. My food-allergic daughter reports that “kisses” from pets may or may not cause hives, depending on the animal’s diet. Diane SmithOakton, Va.

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  3. Health & Medicine

    A Rash of Kisses

    A kiss can trigger allergic reactions.

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  4. 19021

    As stated in the article, nitric oxide is a recognized and commonly monitored pollutant.