And what about my students? It would be great if they could see how wonderful double rainbows, which embrace the world, are when you watch them on a mountain top or in a canoe. And how amazing it is to watch the sunset in the mountains.

Then, perhaps, they wouldn't have let small rivers die, mountains and woods sink in litter, trees be uncontrollably cut. Or any other actions which lead to climate change and endanger the life of mankind.