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The U.S. psychologist who wrote a book about school shootings that investigators found in the Munich gunman's room says researching other mass killers can be a warning sign since young gunmen often are looking for role models.
Authorities said Saturday that new tests show there is no evidence of a marijuana chemical in a Colorado community's tap water and they believe the initial tests were false.
Solar energy ordinarily wins praise from groups that want to cut greenhouse gases, but a proposed solar project at a defunct Long Island nuclear power plant has stirred outrage because it requires demolishing 350 acres of woodlands.
Researchers on Sunday outlined a syndrome called "mild behavioral impairment" that may be a harbinger of Alzheimer's or other dementias, and proposed a checklist of symptoms to help identify who's at risk.
Officials told residents of a small Colorado community not to drink or shower in tap water Thursday because one of the town's wells may have been contaminated with THC, marijuana's intoxicating chemical.
Sequoias growing in the Sierra are among the biggest and oldest trees on Earth, some nearly 300 feet tall and up to 3,000 years old. Could they hep combat climate change?
Has your child swallowed a small battery? In the future, a tiny robot made from pig gut could capture it and expel it.
SpaceX successfully launched a critical space station docking port for astronauts early Monday, along with a DNA decoder for high-flying genetic research.
The enormous algae outbreak that has coated swaths of Florida's St. Lucie River with guacamole-like sludge is a man-made affliction, arising from political and economic decisions made over the past 140 years.
Brenda Hudson recalls weeks spent in a glass-enclosed isolation room after her first kidney transplant, her family allowed to visit only when suited up against germs.
Braving intense radiation, a NASA spacecraft reached Jupiter on Monday after a five-year voyage to begin exploring the king of the planets.
Janelle Monae says she's honored to be part of an upcoming film that tells the little known-story of three black women who were crucial part of NASA's history, including one who helped John Glenn become the first American to orbit earth.
The U.S. government is investigating the first reported death of a driver whose car was in self-driving mode when he crashed. The crash raises questions about autonomous and semi-autonomous cars, their capabilities and their limits.
The first American death involving a car in self-driving mode presents a dilemma: How aggressively to embrace the potentially life-saving technology after a fatal crash. The driver's history of speeding further complicates the question.
Four scientists credited with creating food that's fortified with essential nutrients and vitamins and has helped an estimated 10 million people avoid starvation and disease were awarded this year's World Food Prize on Tuesday.
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