Ha! Things as well as understanding are always changing and never constant or "normal." When hysteria talks I stop listening.Over the decades I've learned to not get too worked up over any gloom and doom being pushed by scientists, especially relating to climate and health claims. It never comes true and frequently is exactly the opposite of what they predict.
This recent one is a perfect example...
The NPS Removes all "Glaciers Gone by 2020" signs at Glacier National Park, Montana after "Larger-than-Average Snowfall over Several Winters" - Electroverse
Besides, if I'm wrong and we do bite the dust in 30 years, I have no doubt some life form more worthy of this great planet will take our place. Until then, I plan to rock on.