Marches and rallies against seed giant Monsanto were held across the U.S. and in dozens of other countries Saturday.
Department of Justice lawyers filed court papers Friday again asking a federal appeals court to delay lifting age restrictions and prescription requirements on an emergency contraceptive popularly known as the morning-after pill.
A new military communications satellite has been launched into space.
ISTA Pharmaceuticals Inc. pleaded guilty on Friday in a federal case involving its eye drug Xibrom, admitting it promoted the drug for unapproved uses and agreeing to pay $33.5 million in fines and fees.
Since 1953, there have been 2,115 major disasters declared in the United States and U.S. territories. Disasters by state, including Monday's tornado in Oklahoma:
Health officials are investigating cases involving patients who suffered complications after being injected with potentially contaminated medications made by a Tennessee specialty pharmacy.
Many states get hit frequently with tornadoes and other natural catastrophes, but Oklahoma is Disaster Central.
Residents in rural northeastern California assessed damage to their homes and businesses Friday from a magnitude-5.7 earthquake, one of the strongest temblors to hit the densely forested region in decades.
An 11-year study of the incidence of brain cancer at jet engine manufacturer Pratt & Whitney in the state ended Thursday with university researchers saying they found no statistically significant elevations in the rate of cancer among workers.
Health officials investigating a cluster of mysterious illnesses in Alabama closed their investigation Thursday after determining the illnesses were unrelated and no new bacteria or viruses were involved.