Krishnan's Blog

Although we are currently concerned about global warming caused by mankind's enhancement of the natural greenhouse effect through greenhouse gas pollution, the Earth's climate has fluctuated many times in the past in response to natural mechanisms of climate change. Such changes in global climate have also occurred over much longer time scales, from hundreds and thousands of years to millions and hundreds of millions of years. In fact the current global warming trend which began at the end of the 19 th century spans only a tiny fraction of the Earth's climatic history. Taking a longer perspective on climate variability can help us gain a better understanding of the global climate and of the evolution of the climate today and in the future. The overall state of the global climate is largely determined by balance between energy the Earth receives from the Sun and the heat which the Earth releases back to space, called the global energy balance. Many causes of climate ch...

Computers, networking and internet have certainly changed our lives and they way we work. In the 21 st century 99% of the offices have all the above mentioned three great inventions. Every office uses computers networked to each other and also connected to the internet. Every office uses one or more servers for e-mails, hosting websites, FTPs, backups, storage the list goes on and on. No office can function without these boons of technology. Even my office has all these and it helps us function better. But these inventions are destroying our environment. So what can we do, so that our environment is not harmed from the energy that our offices consume. The office complexes use a lot of energy there by inc reasing the energy consumption, which is directly proportional to the burning of fossil fuels (coal). So does that mean, our earth has to die in the hands of technology? Certainly not. The wise usage of electricity in offices can certainly reduce the green house e...

Hansen is director of the Goddard Institute of Space Studies at NASA . Hansen is on of first scientists that warm people about global warming in the 1980. He said if web (human) still produce CO2 will make disaster to our world. By using coal and other fossil fuel , this will increase CO2 concentration on our atmosphere from 385 to 600 parts per million (ppm) in the next 10 year. Major scientists will say that cause of global warming is because human produce CO2, but not for Roy W. Spencer, a research scientist at the University of Alabama in Huntsville. But Spencer views are not shared by most science, including the Intergovernmental Panel on Climate Change , a multinational panel that released updated conclusions about human produced global warming and its risks last year. How To Reduce CO2 Emissions Hansen has some idea and solution for this : 1. Postpone building new coal fired power plant unless they have carbon sequestration technology. 2. Phasing out the use of coal fire ...