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6.How is global warming the largest threat to humanity? |
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Answer» Ans :- Climate scientists often warn that rising CO2 levels in the atmosphere will cause an increase in the number and intensity of heat waves in many regions of the world. But anew studyis cautioning that climate change will also significantly increase humidity, magnifying the effects of these heat waves and making it more difficult for humans to safely work or be outside. The study analyzed projected “wet bulb” temperatures — a measure of heat stress that combines the effect of heat and humidity — for the next century. (Wet bulb readings are taken by literally draping a water-saturated cloth over the bulb of a conventional thermometer.) Today in the southeastern United States, wet bulb temperatures of 84 degrees Fahrenheit are rare, but by the 2070s and 2080s, these conditions could happen 25 to 40 days each year, the report found. |
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