Never a Good 'Career Move'?

Climate scientist, Michael Mann (Penn State University) pronounces that "We're not doomed yet". So that's alright? (https://www.theguardian.com/environment/2023/sep/30/human-civilisation-climate-scientist-prof-michael-mann). Mann admits that humans are in a 'fragile moment'. He thinks, however, the species has a narrow window of opportunity to save itself. Mann also thinks we can learn about climate change and its consequences, by examining 4 billion years of Earth history (as detailed in his recent book). It seems to be a story of fragility and resilience. Major climatic changes, however, often led to mass extinctions and replacement of earlier biota (living organisms). The difficulty is that nobody really knows whether the planet has reached 'tipping points', where specific regions or the entire globe will become incapable of long-term support of human life. There's no point to climate scientists, if they don't offer some hope. 'The end of the world is nigh' is a message that only works for religious folk with a particular bent!