(i) Environment : The phenomenon called the global warming is a direct product of excessive emission of chlorofluorocarbons and other harmful gases, including burning of fossil fuels (coal, petrol, shale oil) which supply nearly 90% of all the energy used by industrially developed nations. This will cause large-scale natural destruction by rising oceans and pollution. (ii) Nuclear weapons and diseases : Nuclear weapons are mankind’s worst invention in the name of progress, as witnessed in the atomic bombing of Hiroshima and Nagashaki in Japan during the Second World War. Its after-effects are even worse with long-term consequences of radiation and diseases.