In short, the Sun will explode in 5 years! That's what I believe. And what's happening now: this heat, the melting of glaciers, in short, we don't have much time left, so enjoy every moment of it.

Or maybe that "scientist" got something wrong? I heard that the Sun will explode in 5 (million or billion?) years, but certainly not so quickly. And what's all this talk about heat?! These are just silly prejudices. Specifically about our area: last winter, the temperature outside was -40! Although usually it's in the range of -10-20. Last year was just an incredibly cold winter. And 10 years ago, in the summer, it was +45 in the shade. And this is in a village, 50 km from the nearest city.
There was also a program about culture, in which chronicles written during the time of Ivan the Terrible were mentioned. There is a mention of how cows were grazed in January. Then, too, this was attributed to some kind of mysterious forces. And they often say: "Look! It's hot in the summer! It's cold in the winter! These are anomalies!" We've always had either snow in the winter, which no one expected, or a hot day. Enjoy the heat while it lasts, enjoy the summer. When have there not been weather anomalies? They are everywhere, and there's no need to make a mountain out of a molehill, saying that the Sun will explode into pieces. Well, it will be a good fireworks show to watch.