

There was never a climate doomsday clock, at least not from any legitimate scientific sources. Scientists don’t make predictions, they’re not soothsayers or fortune tellers. It is, however, useful to try and project into the future. They do this using models. Unfortunately, even the most accurate climate model can’t have anywhere near a high enough fidelity to tell each person on the planet exactly how they will be personally impacted by climate change. But that’s exactly what makes climate change so concerning. There are a lot of unknowns, and it just generally makes the future more unpredictable than it otherwise would have been.
The Earth’s climate has been relatively stable for essentially all of our existence as a species. That’s going to change. It already has. We’re in that process now. That is irrefutable. And these changes will happen at a nearly unprecedented rate. Even relatively rapid temperature changes in Earth’s history usually unfold over tens of thousands of years. What we’re observing is unfolding over decades. That in and of itself is concerning, even if we don’t necessarily know exactly how that is going to impact each person individually.
Honestly, the best thing is just not to find out. Why risk it? Does it really make you feel any better knowing that we don’t know exactly what’s going to happen as a result of this unprecedented process? We should cut global greenhouse gas emissions to net zero as quickly as possible so we don’t have to worry about what might have happened if we didn’t.



According to a S&P Global probabilistic model: “global warming is likely to reach 2.3 C as soon as 2040.” And they conclude: “This suggests that–as a baseline–all sectors, including households, may want to prepare for the impacts of physical climate risks associated with a 2.3 C world.”
That’s less than 15 years from now.
Now, let me be clear, they’re not saying that we will for certain reach 2.3C of warming by 2040. They’re offering a probabilistic analysis, and they have determined that it is likely enough that it’s something we might want to prepare for. They “estimate a 90% likelihood that, by 2040, the average global temperature will exceed the Paris Agreement’s goal of 1.5° Celsius (1.5 C) above pre-industrial levels.” And they estimate that “there is a 50% likelihood of it exceeding 2.3 C” by 2040.