Sir,
The biggest problem that the world is now facing is the environmental issue. This has resulted due to blind industrialisation (that is, building huge factories which emit thick black carbon fumes, open cast mining and building concrete jungles both by destroying thick forests, emitting automobile fumes, etc.) over the last 100 years or so. The net effect is the raising of the world’s average temperature, melting of glaciers, rising of mean sea level, reduction in rainfall and consequently drying up lakes and rivers with drastic lowering of natural underground water depths.
