Federal Officials Revise Recommendations for R.S.V. Vaccine

In Homes With Children, Even Loaded Guns Are Often Left Unsecured

H.I.V. Groups Warn of Privacy Risks in How C.D.C. Tracks Virus Samples

In 1969, Nixon appointed a Space Task Group which presented recommendations including building an Earth-orbiting space station, a lunar-orbiting space station, a base on the lunar surface, and a human expedition to Mars. They were too expensive, so Nixon directed NASA to build the Space Shuttle