Your 48 % looks to have come from averaging of a survey of 26 countries, there are 195 in the world. The 26 don’t include China, India or all but 2 countries in Africa.
Concern about climate change shrinks globally as threat grows - study
Concerns about climate change shrank across the world last year, a survey shows, with fewer than half those questioned believing it posed a "very serious threat" to their countries in the next 20 years.
www.reuters.com
The survey I found looked at 121 countries including China.
Anyway. I agree that we are failing to win hearts and minds by writing people off as cookers and having a little girl yell at them on tv.
But to return to my initial question, what should we do? Or is the idea that we give equal weighting to opinion polls and say “oh well the people have spoken” and throw caution to the wind.