How We Established the Most Dangerous Cities in America. To identify the 30 most dangerous cities in America, we reviewed the most recent FBI Crime Report statistics, along with population data. We eliminated all cities with fewer than 10,000 residents in 2014 as well as any cities that failed to submit a complete crime report to the FBI.
Rush Movie Trailer. Watch the third trailer for the Ron Howard Formula One movie Rush starring Chris Hemsworth and Daniel BrÃ¼hl. The movie is based on the real-life rivalry between British driver James Hunt (Hemsworth) and Austrian champion Niki Lauda (BrÃ¼hl). Related Videos (7)
Adrenaline is one of the body's most important stress chemicals. It is secreted from the adrenal glands, which sit atop each kidney. Adrenaline also plays a key role as a neurotransmitter that facilitates communication between brain cells, or neurons, and other cells. An adrenaline rush is a sudden increased secretion of adrenaline from the adrenal glands. It causes an increase in heart rate and respiration. Adrenaline rushes can be healthy responses to actual threats to a person's well-being or symptoms of an underlying mental disorder.