Brian was bitten and clawed to death Marylyn, who had stopped and crouched behind a tree, was approached by the bear but left unharmed. On July 6, 2011, Brian Matayoshi, 57, and his wife, Marylyn, 58, were hiking in Yellowstone National Park when they came upon a grizzly bear and fled, screaming. If you come face-to-face with a wild animal, the natural response is to bolt, but that can trigger the animal's predatory instinct.

Here we present 20 easy-to-miss risks, and how to avoid or survive them. 'We interpret external cues through our subconscious fear centers very quickly,' says Harvard University's David Ropeik, author of How Risky Is It, Really? Trouble is, even smart, sober, experienced men can fail to register signals of an imminent threat.

Staying alive requires recognizing danger, feeling fear, and reacting. Some instances of unintentional death, to use the official term, are unavoidable-wrong place, wrong time-but most aren't. men 18 to 50 years old, accounting for 37,000 of the roughly 148,000 annual fatalities.

Accidents are the leading cause of death among U.S. These survival tips can help you avoid becoming just another statistic.