03 Agosto 2017 09:56
The world will be a very scary place if action isn't taken...Yet more bad news about the drastic effects of climate change has come from leading scientists, who say that deadly heatwaves could kill many living in southern Asia by the end of this century.
Warnings about unsurvivable levels of humidity caused by global warming are just another stark reminder that we need to take preventative action now.It is claimed that the regions likely to be hit hardest by soaring temperatures include northern India, Bangladesh and Pakistan, which are home to 1.5 billion people, almost a quarter of the world’s population. This evidence is based on research highlighting the fatal effects of a combination of high temperature and high humidity, also known as a ‘wet-bulb’ temperature. Wet-bulb temperatures reflect the ability of moisture to evaporate.
If wet-bulb temperatures reach 35C, the human body is no longer capable of cooling itself and results in death. It’s nearly impossible to survive for more than a few hours.Currently, wet-bulb temperatures have very rarely surpassed 31C anywhere on Earth, but in 2015, the Persian Gulf region nearly hit the limit during a year that killed about 3,500 people in Pakistan and India. Without a serious reduction in greenhouse gases and more pervasive use of renewable energy, large numbers of the world’s populations are going to scorch in uncontrollable temperatures. And the worst hit people will be those living in less developed countries. ‘It brings us close to the threshold of survivability, and anything in the 30s is very severe,’ said study author Dr Elfatih Eltahir, from Massachusetts Institute of Technology in the US. ‘With the disruption to the agricultural production, it doesn't need to be the heatwave itself that kills people. Production will go down, so potentially everyone will suffer,’ he added.