Wednesday, June 25, 2008
Read Jerry Seinfeld's concise but to the point article from the following link: http://www.nytimes.com/2008/06/24/opinion/24seinfeld.html
Tuesday, June 24, 2008
Low vitamin D levels "can be considered a strong risk indicator for all-cause mortality in women and in men," researchers report Tuesday in the journal Archives of Internal Medicine. By the time the paper had been accepted for publication, the team had dug deeper and found low vitamin D status "had other significant negative effects in terms of incidence of cancer, stroke, sudden cardiac death and death of heart failure,......"
Saturday, June 21, 2008
"Seawater and freshwater, filtered to remove silt, are fed into pipes which lead to a membrane system, made up of spiral coils to maximize surface area. The salt of the seawater draws the fresh water across the membrane, leading to a build-up of pressure which forces water through the turbine, generating electricity."So far no large scale commercial application wasn't made due to not finding or manufacturing membrane that can withstand enough water pressure and at the same time keeping salt and non-salt water being separated. However, this Norwegian company has found or produced that "magic membrane" "that can work for a small-scale plant, though it's not quite enough for a larger operation."
Read the full article from link below:
Friday, June 20, 2008
Salt inundation and rising sea water along with increasing heat in the Bay of Bengal have started to claim more and more lands in Bangladesh. As if the ocean is in rage. Devastating cyclones like Sidr are becoming more frequent. A climatologist in Dhaka says, "The sea surface temperatures in the Bay of Bengal have been rising steadily for the past 40 years – and so, exactly as you would expect, the intensity of cyclones has risen too. They're up by 39 per cent on average."
Johann Hari's article in The Independent is frightening. An entire nation, Bangladesh, would be under the rising sea within this century. Hundreds of millions of people will either be drowned, swept away, or will be victimized beyond anguish, scattered around the world as hapless refugees. This all will happen due to our world's increasing carbon footprint, in which, Bangladesh's contribution is mere 0.3 percent of the world's contribution, but absolute devastation would claim 100 percent of this cyclone and flood ravaged nation through global warming and its apparent irreversible consequences.
A Bangladeshi scientist surmises this stranger than fiction scenario in succinct words Johann Hari's article: "This is the ground zero of global warming." He listed the effects. The seas are rising, so land is being claimed from the outside. (The largest island in the country, Bhola, has lost half its land in the past decade.) The rivers are super-charged, becoming wider and wider, so land is being claimed from within. (Erosion is up by 40 per cent). Cyclones are becoming more intense and more violent (2007 was the worst year on record for intense hurricanes here). And salt water is rendering the land barren. (The rate of saline inundation has trebled in the past 20 years.) "There is no question," Dr Rahman said, "that this is being caused primarily by human action. This is way outside natural variation. If you really want people in the West to understand the effect they are having here, it's simple. From now on, we need to have a system where for every 10,000 tons of carbon you emit, you have to take a Bangladeshi family to live with you. It is your responsibility." In the past, he has called it "climatic genocide".
Is there any remedy available? Perhaps. Is there still time to stop this progression of silent genocide arising from carbon footprint?
Ralph Nader may have the answer. He said, "We've got to have a national mission of converting our economy, and the example for the world is solar energy, 4 billion years of supply. It is environmentally benign, decentralized, makes us energy independent and replaces the ExxonMobil/Peabody Coal/uranium complex. That is why we have got to go for economic, political, health and safety reasons."
Wednesday, June 18, 2008
Tuesday, June 03, 2008
"Scientists at Arizona State University have created a new kind of solid state memory that they say is much cheaper and more efficient than flash. And crucially, because it uses a new kind of nanotechnology, storage capacities will be much higher than anything we have today, for a tenth of the cost.
The new memory is called programmable metallization cell (PMC) and one terabyte (1TB) USB thumbdrives are said to be just a few years away.
PMC memory works in a vastly different way to current flash technology.
Flash uses electronic charges to physically store bits of information, whereas PMC works on the molecular scale to create nanowires from copper atoms. These nanowires record binary ones and zeroes, enabling a massive amount of data to be stored in a tiny space.
If a positive charge is passed through the PMC memory, the nanowires disassemble, allowing it to be used over and over again."