Thanks for this useful article, it is important to educate on the hard limits of the temperature endurance of humans.
But something gives away your own misperception of lack of urgency, which you still seem to have, despite the article.
"Over the next few decades", is invalid, due to the nonlinearity of the effects we are seeing.
This is the reason why even the scientific community has consistently got estimates wrong, over the past few decades. What we are seeing is like a car crashing into a large immovable object in slow motion, things impacting on other things, deforming, until all come to rest, squashed against the object collided with.
Imagine trying to predict where the immovable suface is, from within the car, measuring the rate of things deforming, and you start to get an idea how futile it is.
All we can say is that there is an immovable object approaching, things are deforming towards an abrupt end, and if we don't stop the forward movement even more abruptly, we are all done.
Droughts, and food shortages from plant life and cattle dying, are things now happening. Those are going to result in massive loss of human life, unless something is done to undo those catastrophes in process.
The planetary warming is something occurring as a result of something like a sealed jam-jar effect, the C02 becoming more dense is the jam-jar forming, the temperature within the jam jar goes up exponentially, like steam pressure within a boiler, it isn't linearly related to the energy applied to the boiler, the only way to reduce or slow the pressure buildup is to open a release valve of some kind. In the case of the C02 in the air, we have to reduce its thickness or density. There is no other way round.
So these other effects have to be considered together with the temperature rise, including the effects of things like plant loss on C02.
All of that can sound like too much, why even try to stop it, but we actually do have a way to remove the force accelerating us towards the immovable object, a reverse force, which can effectively completely brake our travel and even reverse, allowing at least some things to recover and be saved.
We also have human ingenuity which can, and is conjuring up ways to replace some things already lost in the collision in process so far. Hydrogen from solar energy acts as fuel which functionally replaces fossil fuels with none of the pollution, but in addition is an amazing catalyst for processes of conversion of solar power to oils of various kinds and even food (See "Solein").
There we should see the clue of what we need to do.
Energy by extraction is the single cause of all pollution.
All pollution is caused by the processes of extraction. Stop that, and we stop the car crash of pollution.
The motive force continuing to push us forward in the car crash is the economy of money-as-debt. Every promise to pay is a promise to extract.
So we have to remove the need to keep making promises to pay. In fact we need to convert the action of extracting, to something like creation.
We can do this by changing the nature of money, from money as debt, to money as energy (Also known as energy backed money).
Instead of a gold standard, as once existed, we need a number of Joules of energy to be assigned to each token of money. Joules can be alternately expressed as kilowatt hours, but this is confusing to us when we are trying to consider the effects of energy, as it contains two terms of time, which conveniently cancel one another out to make things easier for those who think only in terms of capital, which is all figures in bank balances, rather than as the flow of energy, which is what actually produces value. A Watt is simply one Joule per second, So the simplest unit of energy for the new purpose of money (To stop the car crash!) is a Joule.
Stored energy beyond the capacities needed by working resorvoirs in any system is not needed, and becomes redundant in presence of the ubiquitous, donated, inexhaustible, infinitely scaleable source of live energy, which is the sun.
Banks should know this is a drastic change to the way they do business, but we can't get around it.
Even if we are not in the countries currently facing starvation and drought yet, we will be, all of us, no exceptions, we are all in the car crash, and it isn't happening in decades to come, it is happening right now, hence the reason we need to make this essential change to money straightaway.
Further, we are already also experiencing inflation, since the value of money is also part of the car crash, it too is deforming exponentially, with everything else.
I've explained this also in terms of Austrian Economics, why and how the nature of money has to change, to stop what is ultimately an exponential effect, a hyperobject which we have been struggling to deal with, and will continue to struggle until the fault is fixed; the disconnect between us and nature, in terms of energy, which at the end of the day is her currency, it is issued and enforced exclusively by the sun, and as yet we are effectively refusing to use it, as long as we don't issue it in exactly the same way; donated to all things needing it with no restriction.
If we think we can't manage that, think again, remember when we saw the effects of it already, when 4Tn stimulus per month was issued, oil prices went negative, the only time ever for any commodity, and the environment made the only spike of recovery ever seen.
Just for a short time, we had stopped the forward motion and were in reverse.
That is what we can, and must do again.