PAT BODNAR: To learn more about first aid, ask a hospital or organization like a Red Cross or Red Crescent Society for information. Training may be offered in your area.

If you know first aid methods, you can be calmer and more helpful in case of emergency.

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CHRISTOPHER CRUISE: This SCIENCE IN THE NEWS was written by Jerilyn Watson. Your announcers were Bob Doughty and Pat Bodnar. I’m Christopher Cruise. Listen again next week for more news about science in Special English on the Voice of America.