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Puffy Guardian Caps Could Reduce NFL Player Concussions

entertainment.howstuffworks.com/nfl-guardian-caps-news.htm

They look like giant marshmallows and are disliked by many NFL players, but may be just what the doctor ordered to protect them against concussions and other head injuries.

5 Reasons Commercial Airplanes Crash

science.howstuffworks.com/transport/flight/modern/reasons-commercial-airplanes-crash.htm

Although it doesn't happen often, large passenger jets crash for many reasons, from mechanical failure to pilot error.

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