Agency for Toxic Substances and Disease Registry

The Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR protects communities from harmful health effects related to exposure to natural and man-made hazardous substances. We do this by responding to environmental health emergencies; investigating emerging environmental health threats; conducting research on the health impacts of hazardous waste sites; and building capabilities of and providing actionable guidance to state and local health partners.

International Noise Awareness Day
International Noise Awareness Day

International Noise Awareness Day is an annual observance held on the last Wednesday of April. This global campaign aims to raise awareness of the impact of noise on the health and welfare of people.

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Page last reviewed: May 5, 2021