Sir: The monsoon vagaries are not only a cause for concern but also a chance to think over some strategies. The natural phenomena like El Nino and La Nina are nothing but the results of global warming. It is also to be noted that the present global economic slowdown (coupled with climate change) is a big threat to the interests of all the nations. The world should come forward to resolve the issue of gas emissions that is playing havoc with the patterns of the monsoon. P SENTHIL SARAVANA DURAI Mumbai India