What's being called "nomophobia," the anxiety of not having your mobile phone with you, may be a real condition among teens, at least according to two recent studies out of South Korea, the world’s most connected nation. Larry Greenemeier reports
A cave insect's marathon sex sessions extract nourishment along with sperm from a reluctant male
Exposure to bright light in the morning appears linked to reduced appetite and lower body weight, regardless of sleep patterns
NASA's Kepler space telescope has identified a planet that is both similar in size to Earth and within the habitable zone of its sun
Support is growing for a decades-old physics idea suggesting that localized episodes of disordered brain activity help keep the overall system in healthy balance
Three weeks into the search for Flight 370, clues to its whereabouts remain scarce while fanciful theories explaining the disappearance abound
A total lunar eclipse on April 15, 2014, was captured by Scientific American readers around the globe
Concentrations of greenhouse gases in the atmosphere have reached this level for the first time in millions of years. What does this portend?