When was the idea of global warming thought up?

Answer 1

well scientist knew about it 30 years before but however did not have any evidence on there are many sceptics now a days how still don't believe global warming is man made!

Answer 2

The idea of global warming started to gain scientific attention in the late 19th century when researchers began to speculate about the potential impacts of increased levels of greenhouse gases in the atmosphere. However, the concept became more widely recognized in the late 20th century with the release of influential reports and studies that highlighted the role of human activities in driving climate change.