The reason for climate change may be a decline in solar activity.
If you believe in expert forecasts, the climate will become sharper in the near future, which will lead to falls and hunger. In 1645-1715 a small ice age passed, when frozen summer was observed. Medieval people could not breed animals, too little food, and hunger was starving.
NASA scientists said that the Sun is more "sleeping" each month, and soon any activity on the set stops working. There are almost no explosions last year on the Sun. Experts say everything that happens is proof of a cycle of change. That's what happened in the Middle Ages.
Now we can observe climate change in the territories where it used to be relatively warm, the snow started to fall. The changes take place so quickly that people will not have time to prepare them.
NASA does not scare people with future events, because it is possible that everything will go more or less smoothly. Humanity may not notice any shortage.