Simultaneous emergencies in different parts of the world could stop countries from sharing ground crews and equipment, new research warns.
His work with his colleague Richard Ryan changed how psychologists understand human motivation and what people require to flourish.
Republican-led states had accused financial firms of colluding against coal producers. Vanguard also agreed not to push for action to fight climate change.
Dr. Jay Bhattacharya, who was appointed to the role last week, has offered to publicly endorse vaccination, in particular the measles vaccine, winning over some agency employees.
Most people alive today carry fragments of Neanderthal DNA in their genome. Now scientists are gaining a more intimate understanding of the ancient encounters that put it there.
Scientists studying data collected over more than three decades found accelerating losses. Their research offers clues about the causes.
Elon Musk wants to launch a million satellites, but researchers say global warming is changing the upper atmosphere in ways that makes space junk linger.