More than a third of 50 recently surveyed Nobel laureates cited “population rise / environmental degradation” as the biggest threat to humankind. Second on the list was “nuclear war”, cited by 23 per cent of the laureates, while no other issue was selected by more than 10 per cent of respondents. The survey was conducted in 2017 by Times Higher Education https://populationmatters.org/news/2017/09/nobel-laureates-population-growth-a-major-threat/
The disastrous impact that the human populations is having on our environment is causing the following –


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Data Source: Times Higher Education Survey 2017