According to latest release from NASA, Earth’s global surface temperatures in 2017 ranked as the second warmest since 1880. In 2017, globally averaged temperatures were 1.62 degrees Fahrenheit (0.90 degrees Celsius) warmer than the 1951 to 1980 mean. During last century increase carbon dioxide and other human made emissions into the atmosphere has cause Earth’s average surface temperature to rise by about 2 degrees Fahrenheit (a little more than 1 degree Celsius).
The India Meteorological Department’s (IMD) draft climate summary says that 2017 was the fourth warmest year on trot after 2016, 2015, and 2014.
When the air temperature or humidity rises above the range for comfort, people may feel
Heat related illness:
Heat rashes occur due to inflammation caused by blockade of the ducts of sweat glands.
Heat cramps are sudden, severe pains in the muscles caused by involuntary muscle contraction. Most often occur when people drink large amounts of water without sufficient salt.
Heat syncope is feeling of dizziness and fainting. Syncope occurs due to insufficient blood flow to brain caused by loss of body fluids..
Heat stroke is the most serious type of illness cause by higher temperature and in it body temperature often rises to 40 C above.