Voice of America: A massive heat wave is killing people in many countries around the world.
Most die of heat stroke. Heat stroke is the most serious heat-related sickness. It can develop when body temperature reaches 40.5 degrees Celsius (or 105 degrees Fahrenheit).
Victims need water and other cooling measures. Untreated heat stroke can lead to organ failure and death. Those who survive can suffer permanent damage.
Deadly heat in Pakistan and India
A heat wave in Pakistan will join this year's heat wave...