Breaking the Way through Snow to Sea Ice

Global warming is a very hot topic nowadays. Although there are still some who doubt its existence, it has recently become so obviously visible as to exceed even the most imaginative expectations of many scientists. In fact, global warming's visibility is the result of invisibility - namely of the snow and ice which is disappearing from the Earth's surface at a very fast pace. This is important for several reasons. Firstly, more than a sixth of the Earth's population depends on fresh water derived from the spring runoff of melted snow and ice. Due to accelerated melting in the last four decades, it is seriously questionable whether future generations will have access to a sufficient amount of fresh water. Secondly, the Arctic Ocean is losing its sea ice extremely rapidly, and some scientists even forecast that it will remain free of sea ice by as early as 2020.