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FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. I’m Faith Lapidus.

BOB DOUGHTY: And I'm Bob Doughty. This week, we tell about health problems linked to extreme heat. We tell what experts suggest to prevent and treat these problems.

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FAITH LAPIDUS: Extremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can cause serious medical problems -- even death.

Floods, storms and other natural events kill thousands of people every year. So does extreme heat. Experts say heat may be nature’s deadliest killer