Tuesday, July 21, 2009

Delhi airport among the world's worst to sleep in.

Delhi airport took a place among the world's worst airports for travelers to sleep in, a new poll reported.The survey was taken in the website www.sleepinginairports.net, asked travelers to evaluate the best and worst airports around the world.

India’s capital airport grabbed the fifth spot, and has been described as -full of mosquitoes and birds, filthy, crowded, has poor signage and several announcements that rise at night.

"Had to change in the toilet which made the one in Trainspotting look like the Ritz," News.com.au quoted Moray as saying.

"It was dirty, with all pervasive smell of sweet over powering phenyl which they use for disinfecting. The departure lounge has this odour mixed with that of cigarettes," said another traveler Amit Mathur.

Mumbai airport is also in top 10, it takes 8th spot for its lack of food and shops open at night, disgusting toilets, and poor air-conditioning.

List of top 10 worst airports to sleep in.

1. Charles de Gaulle Airport, Paris
2. Sheremetyevo Airport, Russia
3. JFK Airport, New York City
4. Los Angeles Airport
5. Delhi Airport
6. O'Hare airport, Chicago
7. Mumbai Airport
8. Manila Airport
9. Rome Airport, Fiumicino
10. Heathrow Airport, London (ANI)

Monday, July 13, 2009

Two new and different twists to today's changing climate

Earth is currently in a period of warming. Over the last century, Earth's average temperature rose about 1.1°F (0.6°C). In the last two decades, the rate of our world's warming accelerated and scientists predict that the globe will continue to warm over the course of the 21st century. Is this warming trend a reason for concern? After all, our world has witnessed extreme warm periods before, such as during the time of the dinosaurs. Earth has also seen numerous ice ages on roughly 11,000-year cycles for at least the last million years. So, change is perhaps the only constant in Earth's 4.5-billion-year history.

Scientists note that there are two new and different twists to today's changing climate: (1) The globe is warming at a faster rate than it ever has before; and (2) Humans are the main reason Earth is warming. Since the industrial revolution, which began in the mid-1800s, humans have attained the magnitude of a geological force in terms of our ability change Earth's environment and impact its climate system.

Since 1900, human population doubled and then doubles again. Today more than 6.5 billion people inhabit our world. By burning increasing amounts of coal and oil, we drove up carbon dioxide levels in the atmosphere by 30 percent. Carbon dioxide is a "greenhouse gas" that traps warmth near the surface.

Humans are also affecting Earth's climate system in other ways. For example, we transformed roughly 40 percent of Earth's habitable land surface to make way for our crop fields, cities, roads, livestock pastures, etc. We also released particulate pollution (called "aerosols") into the atmosphere. Changing the surface and introducing aerosols into the atmosphere can both increase and reduce cloud cover. Thus, in addition to driving up average global temperature, humans are also influencing rainfall and drought patterns around the world. While scientists have solid evidence of such human influence, more data and research are needed to better understand and quantify our impact on our world's climate system.

Saturday, July 04, 2009

The impact of new technology on our environment

An element broadly used to produce microchips and flat-screen monitors and televisions has 17,000 times the greenhouse effect of carbon dioxide, but remains unfettered under domestic laws or international treaties.The chemical in issue is known as nitrogen trifluoride (NF3), and researchers Michael J. Prather and Juno Hsu have called it the "missing greenhouse gas." previously used only in little quantities to create microchips, NF3 has become a main product due to its use in the liquid crystal displays of flat-screen televisions and computer monitors. Global production is expected to reach 8,000 tons per year by 2010, which could have a global warming effect equivalent to 130 million metric tons of carbon dioxide.

Semiconductor manufacturers determined that NF3 would make a superior substitute for PFCs (perfluorocarbons, it is used in creating chips at first), even though NF3 has a much larger greenhouse effect. The source was that while two-thirds of PFCs escape into the atmosphere during manufacturing, studies illustrated that only 2 percent of NF3s escape during the same process. Prather has challenged these numbers, noting that NF3 is "a slippery gas," capable of escaping not only during manufacturing but also through transport, application or discarding.

“This will cause a drastic change in the environment “