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The United States has one of the safest public drinking water supplies in the world (1). Tap water not only provides water for daily household activities such as drinking, bathing, and cooking, it also benefits the entire community by providing water to serve businesses, schools, and hospitals, and to promote overall health (2). May 4–10, 2014, is Drinking Water Week, an annual observance whose theme ("What Do You Know About H2O?") underscores the many ways in which all consumers can get to know their water (3).

The recommendations were developed jointly under the auspices of CDC's Division of Reproductive Health (DRH) and the Office of Population Affairs (OPA), in consultation with a wide range of experts and key stakeholders. A multistage process that drew on established procedures for developing clinical guidelines (1,2) was used to develop the recommendations. In April 2010, an Expert Work Group (EWG) comprising family planning clinical providers, program administrators, representatives from relevant federal agencies, and representatives from professional medical organizations was created to advise OPA and CDC on the structure and content of the revised recommendations and to help make the recommendations more feasible and relevant to the needs of the field.

Tobacco is a major cause of preventable illness and death. However, clinician use of an evidence-based guideline for treatment of tobacco use is low. This case study describes the process for conducting a pre-intervention assessment of clinician practices and beliefs regarding treatment of tobacco use.

Scientists get to solve puzzles every day, because science and research involve finding solutions from the clues that we are given. Puzzles, brainteasers, riddles, and songs are provided for kids' enjoyment.

Lead is a naturally occurring metal found deep within the ground. It occurs in small amounts in ore, along with other elements such as silver, zinc or copper.

Air pollution is a mixture of natural and man-made substances in the air we breathe. It is typically separated into two categories: outdoor air pollution and indoor air pollution.

Formaldehyde is a colorless, flammable, strong-smelling chemical widely used to make home building products.

The NIEHS and NTP director shared updates on NIEHS scientific advances and answered questions about topics such as BPA and climate change.

Studies requiring gene expression analysis by microarray methods require the extraction of high quality RNA. Fresh, frozen tissue is the optimal sample for these studies. A detailed protocol to assist the investigator in tissue collection, RNA extraction and RNA quality assessment.

Life changes when a baby arrives. Expect a bundle of joy as well as new challenges.