Sir: Global warming and climate change are now considered an emerging threat to the world. Seminars and conferences are being held every year on this issue all over the world. The United Nations Organisation (UNO) is also working on this sensitive issue. The temperature of earth is increasing day by day, this increase in temperature is now worrying the climate scientists and they are relating this with the theory of destruction. According to them, the cities and countries near the sea are in danger. They also state that Karachi will drown into the water in the year 2060. These statements are supporting the statement that the next world war will ensue due to the problem of water. There are many ways to stop this huge threat but the government of Pakistan is not taking this issue seriously. The plantation of trees, use of fossil fuel in industry, solid waste management system and by overcoming the effect of greenhouse gases, can help decrease the negative effects of this deadly trend. ABDUL BARI Karachi