In the Moscow region, ponds and rivers are starting to freeze over, and incidents on the ice have already become more frequent. Ice presents danger! The air temperatures will fluctuate! Remember that ice should be at least 10 cm (15 cm in salt water) thick to be safe to stand or walk on. Ice thicknesses can also be evaluated visually: blue colour indicates that it is thick enough, white means it is half as thick, and ice that is mottled grey or white is not safe...

If we'd never, ever taken a risk, we'd probably all be sitting in caves and warming our paws at the campfire. No, we wouldn't sit and warm. Fire is also a risk. We would just walk through the vast expanses of Africa and dig up the roots. But our ancient ancestors took risks, which eventually led to the development of civilization, and we can now warm our paws in different places. As well as the roots, we have a fairly wide range of different gastronomic delights. I.e. the risk is the engine of evolution,...