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Showing posts with label WHO. Show all posts
Showing posts with label WHO. Show all posts

Wednesday, May 2, 2012

Water shortage drives global warming


A safe and clean water is becoming a scarce commodity in many parts of the world. With growing population and rapid industrialization, the demand for water has increased dramatically. This in turns pushes the demand for energy and fossil fuels resulting in further increase in global warming. According to WHO (World Health organization) specifications, a clean and safe water should be free from pathogenic organism such as bacteria and virus, and also the TDS (Total dissolved solids) levels should be below 500ppm (parts per million). Unfortunately such quality water is not readily available from surface or ground water. The water stored in catchment area for supply of drinking water to cities requires certain chemical and biological treatments before it can meet WHO specification. In many smaller cities especially in developing countries such treated drinking water is not available. NASA’s Gravity Recovery and Climate Experiment Satellite or GRACE orbiting earth in tandem, two satellites are able to measure the water storage on ground and below across the world. The NASA data shows that most of area in Northern India will be facing a severe shortage of water in the near future because farmers are pumping ground water at an alarming rate. The ground water is getting depleted faster than it is being replenished. The water table has gone deeper and deeper and many of the pumps they used five to ten years ago cannot pump water anymore because the water levels have gone so deep. States like Punjab, supposed to be ‘wheat bowl of India’ are facing water shortage. Farmers who have used 100 feet bore well are now digging their bore well up to 900 feet. To make the situation worse, a large number of coal fired power plants are licensed to meet the increasing power demand in India. Both quantity and quality of water has a direct impact on energy demand and global warming. The rainwater which replenished the ground aquifers are unable to match the water sucked by these pumps. About 114 million people living in Rajasthan, Punjab, and Harynaya including the capital city of Delhi are facing water shortage. The likely alternative for these states is to desalinate the seawater from the west coast of India and pump them all the way to Delhi, which is thousands of kilometers from the coast. The increasing economic growth of India has increased the demand for power, often based on coal. Power industry is one of the largest users of water. Plants located on coastal are able to use seawater for their ‘once through’ cooling system and for boilers. But the plants located inland have to use only surface water like rivers. They cannot use ‘once through’ system, but use a closed circuit cooling systems where they have to store large pool of hard water. It is a vicious cycle. Water shortage increase the demand for power and power shortage increases the demand for water. Desalination is the only alternative but it is a very energy intensive and a costly solution. Changing climate, global warming, deforestation, and water shortage are ominous signs of Nature’s fury against human greediness. When countries like Australia set up their largest desalination facilities, the country experiences the heaviest rains in decades with flash flooding in many parts, making politicians wonder whether their water management decisions are right. Unfortunately Science cannot solve our greediness only human beings can learn lessons from Nature and take right decisions.

Monday, April 23, 2012

Carbon-free air is a Human right issue


Environment Pollution Authority EPA of US Government regulated the gas emission standards for power plants for oxides of Nitrogen and Sulfur in the past but not for GreenHouseGas (GHG) emissions into the atmosphere. However, when President Obama took over power, EPA passed ‘Clean Air Act’ to regulate the emission standards of all gases including GHG for new stationary power plants. This act projected to prevent over 230,000 early deaths in US alone by 2020 due to Carbon dioxide. According to this act, 1. Starting in January 2011, large industrial facilities that must already obtain Clean Air Act permits for non-GHGs must also include GHG requirements in these permits if these increase are newly constructed and have the potential to emit 75,000 tons per year of carbon dioxide equivalent (CO2e) or more or modify and increase GHG emissions by that amount. 2. Starting in July 2011, in addition to facilities described above, all new facilities emitting GHGs in excess of 100,000 tons of per year CO2e and facilities making changes that would increase GHG emissions by at least 75,000 tpy CO2e, and that also exceed 100/250 tons per year of GHGs on a mass basis, will be required to obtain construction permits that address GHG emissions (regardless of whether they emit enough non-GHG pollutants to require a permit for those emissions.) 3. Operating permits will be needed by all sources that emit at least 100,000 tons of GHG per year on a CO2e basis beginning in July 2011. 4. Sources less than 50,000 tons of GHGs per year on a CO2e basis will not be required to obtain permits for GHGs before 2016. (Sources: clean technica) According to Stanford scientist Mark Jacobson, there is a definite link between the Carbon dioxide and increasing deaths. While the argument continues between believers of global warming and skeptics, it clear that Carbon pollution kills people without any discrimination. Any gaseous emission into the atmosphere will eventually spread across the borders of each country and becomes a global issue. EPA in each country in the world should pass similar legislation to curb GHG emissions, at least to protect their people if not to curtail global warming. What is most surprising is some scientists still want more ‘scientific data’ to accept whether GHG causes global warming or not. One need not be a rocket scientist to conclude that chemical pollution is slowly poisoning the air, water and earth. Hundreds of chemicals that we used in the past were abandoned due to their harmful effects. For example, Asbestos,DDT,Chlorine for disinfecting drinking water, coal tar dyes, Nicotine, Refrigerants like Fluorocarbons etc to name a few. We can choose to ignore the warnings of Nature and carry on the business as usual in the name of science. But we cannot ignore people claiming their legitimate rights to live and breathe a quality air to lead a normal life. It is a human right issue. It is not an issue that can be debated only by scientific community and decided. WHO should classify ‘Quality air’ as a fundamental human right with great urgency. Governments around the world can pass ‘Clean air act’ similar to US. They may not levy carbon tax or offer new incentives to promote green energy, but regulate the indiscriminate emissions of GHG into the atmosphere, which passively kills millions of people around the world. This is nothing but ‘weapons of mass destruction’ in a passive way, but on a grander scale. When ‘passive smoking’ is a crime Carbon emission too is a crime. It is the duty of industries to incorporate carbon pollution prevention measures by scientific innovations.