Showing posts with label Greehouse effects. Show all posts
Showing posts with label Greehouse effects. Show all posts

Monday, March 9, 2009

Green House Gases

Global Warming - 1

Global Warming !! Not only melting icebergs but also changing our maps, our living styles too


Tuesday, March 3, 2009

Exxon-Paid Scientist Claims Earth Doesn’t Have Enough Greenhouse Gases

Exxon-Paid Scientist Claims Earth Doesn’t Have Enough Greenhouse Gases

February 28, 2009 ·

A scientist on ExxonMobil’s payroll is trying to convince people that all those greenhouse gas emissions flowing freely around the world are nothing to worry about – in fact, we need more! Princeton University Atomic Physicist Dr. William Happer testifed before the Senate’s Environment and Public Works Committee on the 25th, claiming that the real concern is a ‘CO2 famine’.

Greener Gadgets: The Lightimus Solar LED Light

Greener Gadgets: The Lightimus Solar LED Light

March 2, 2009 · Print This Article

There were a lot of amazing eco-friendly inventions unveiled during the 2009 Greener Gadgets Design Competition, and ultimately, there could only be one winner: The Tweet-a-Watt. One design that didn’t make the top 4 but was brilliant and eye-catching all the same was the Lightimus, an indoor solar light that acts as a constant reminder of the cycle of life.

From Core 77:

Light, Time & Us… All we are sharing the same time and the same planet to which the sun gives life. However, modern life makes us self-focused, and causes us to forget that we are a part of total life chain on our planet. Global warming, enviromental pollution and biological pollution threaten this chain and a sustainable lifecycle.

Lightimus is a decorative lighting design emphasizing the importance of the life cycles of our planet by keeping on its own life cyle during its usage. The product is in the form of an hourglass. One side is composed of solar panels and accumulates energy during day time. The other side is composed of a series of LED lights to lighten its enviroment during night time. When fully charged, its NiMh Battery can illuminate 12 LED bulbs (3mms) for up to 8 hours. When the lights fade away in the morning, you rotate the other side and put it under the sun; in the night it will be ready to illuminate its enviroment again. And the cycle continues - there is no switch on this product.

The LED bulbs on the Lightimus fade away gradually, mimicking the setting sun and representing the passage of time. It may not be the next amazing piece of eco-technology that’s gonna help us save the world, but it’s a slick piece of green design that we’d love to see go into production.

Friday, February 20, 2009

The greenhouse-gas emissions for an entire country : Possible to measure ??

The United Nations reported this week that Kyoto Protocol signatories have reduced greenhouse-gas emissions to 5 percent below 1990 levels, four years ahead of the treaty schedule.

For a country to get a direct readout of its national emissions, it would have to put a greenhouse-gas meter on every tailpipe, landfill, and cow. Since that's impractical, government officials track the inputs rather than the outputs. In other words, they count up the number of gallons of fossil fuels consumed, cattle raised, and pounds of waste produced. From there, it's just a matter of doing the right calculations.

More Details on Here

Greenhouse gases hit record

UN:

Greenhouse gases in the Earth’s atmosphere have reached new record highs and show no sign of leveling off, the UN weather agency said Tuesday.

The report by the World Meteorological Organization was released a year before representatives from major countries meet in Denmark to negotiate a new international treaty to curb greenhouse gases for 2012 and beyond.

The gases—carbon dioxide, nitrous oxide and methane—are produced partially by natural sources, such as wetlands, and partially by human activities such as fertilizer use or the combustion of fossil fuels.

Green House Air : Future Impacts

Greenhouse hot air could be very dangerous for our this green planet. Such as

  • Experts predicts that as a result of global warming sea levels will rise by between 0.09 and 0.88 metres by 2100. This may not sound like much, but a half-metre rise in sea level would put paid to many low lying islands, especially in the Pacific, and cause vast saline inundations in countries like Bangladesh.
  • Many cities - among them Mumbai (Bombay) and Bangkok - could be threatened too. Millions of people will be forced to move as 'environmental refugees' to higher ground.
  • Future global warming will affect different regions in different ways. A report by the European Acacia Project predicts that parts of southern Europe will become so hot that the tourist industry could suffer, and alpine glaciers could melt entirely by the end of the century. In northern Europe snowfall and rain may increase. In the north cropland productivity is likely to increase, but with the warmer weather will come a greater risk of pests and diseases spreading.
  • The scientists predict that a decrease in rainfall in some parts of Africa, Latin America and Asia - another likely consequence of global warming - could lead to a decline in grain yield of 10-15 per cent over the next 50 years.
  • Indeed, the Experts suggests that global warming could trigger more extreme weather events - floods, droughts and the like - which will have a serious impact on food production and human populations.
  • Areas of the world which depend on runoff from glaciated mountains would see a catastrophic drop in water supplies as the final ice-fields melt.
  • The costs of global warming, in financial terms, could be astronomic. Already the cost of property damage is rising at around 10 per cent a year, and between 1970 and 2000 economic losses caused by natural disasters doubled.
  • Some insurance experts warn that the industry could be in danger of running out of money if it is to meet claims stemming from climate-related disasters in the not too distant future. Warmer ocean waters are likely spark more intense hurricanes, with more damaging winds and much heavier rainfall.
  • Overall, global warming is likely to be a disaster for biodiversity, complex ecosystems as species migrate to stay within their climate zone. And those that benefit tend to be invasive competitors, adding to the non-climate extinction crisis. A report published in the scientific journal Nature in 2004 suggested that up to a third of species could be 'committed to extinction' because of climate change by 2050.
  • Some scientists have speculated that global warming could lead to the complete wiping out of the Amazon rainforest, causing a biological catastrophe unparalleled in modern times. This is likely to be accompanied by the widespread loss of coral reefs due to more frequent 'bleaching' in warmer waters.

Thursday, February 19, 2009

Air: Hot or not : The basics of Greenhouse effects

During the twentieth century, global atmospheric temperatures have risen by about 0.7�C. However, since the mid-1970s the rate of warming has tripled. The last decade has seen nine of the warmest ten years since records began in 1861. 2004 was the fourth-warmest ever. In descending order of heat the five warmest-ever years were: 1998, 2003, 2002, 2004, 2001. Moreover, new evidence - compiled from 'proxy data' like ice cores and tree rings - suggests that temperatures are now higher than they have been for over a thousand years.

Just like the glass on a greenhouse, a blanket of water vapour and other 'greenhouse gases' - notably carbon dioxide, methane and nitrous oxide - trap some of the sun's radiation as it bounces off the surface of the earth.

This natural greenhouse effect has enabled life to develop in all its complexity - without it the planet would be frozen solid - but since the industrial revolution the amount of greenhouse gas has risen. As a result more heat has been trapped, causing a warming of the atmosphere.


Monday, January 26, 2009

Why Plastic Bag should be ban by us personally ?

Why We should ban personally plastic bags ? It's simple !

Just Simple to assign its feature and our reason to ban it in our daily life.

Plastic bags are not biodegradable. They clog waterways, spoil the landscape, and end up in landfills where they may take 1,000 years or more to break down into ever smaller particles that continue to pollute the soil and water.

Plastic bags also pose a serious danger to birds and marine mammals that often mistake them for food. Thousands die each year after swallowing or choking on discarded plastic bags.

Finally, producing plastic bags requires millions of gallons of petroleum that could be used for transportation or heating.

Tuesday, January 20, 2009

Renewablae Energy : We need it badly

Renewable energy resources are kind of those energy which are not destructing itself for producing energy for us, such as wind, solar and hydropower. This kind of energy offer clean alternatives to fossil fuels. They produce little or no pollution or greenhouse gases, and they will never run out.


Solar Energy

The best energy resources we have in this planet is The sun. Sunlight, or solar energy, can be used for heating, lighting and cooling homes and other buildings, generating electricity, water heating, and a variety of industrial processes.

Moreover, Most forms of renewable energy come either directly or indirectly from the sun. For example, heat from the sun causes the wind to blow, contributes to the growth of trees and other plants that are used for biomass energy, and plays an essential role in the cycle of evaporation and precipitation that makes hydropower possible.

So We can call The Solar Energy Resource as "Premio resource of Recyclable Energy".


Wind Energy

After Solar power, we can assume Wind is secondary resources as recyclable energy generating factor. Wind is the movement of air that occurs when warm air rises and cooler air rushes in to replace it. The energy of the wind has been used for centuries to sail ships and drive windmills that grind grain.

At present, researchers are expressing their own view for wind energy which is captured by wind turbines and used to generate electricity.


Hydropower

This is also secondary resources of recyclable energy. Where Water flowing downstream powerfully there it is a powerful force.

As we know, Water is a renewable resource, constantly recharged by the global cycle of evaporation and precipitation. The heat of the sun causes water in lakes and oceans to evaporate and form clouds. The water then falls back to Earth as rain or snow, and drains into rivers and streams that flow back to the ocean. Flowing water can be used to power water wheels that drive mechanical processes. And captured by turbines and generators, like those housed at many dams around the world, the energy of flowing water can be used to generate electricity.


Biomass Energy

Now a days, Biomass has been an important source of energy.

With wood , people are promoting the most common source of biomass energy, but other sources of biomass energy include food crops, grasses and other plants, agricultural and forestry waste and residue, organic components from municipal and industrial wastes, even methane gas harvested from community landfills.

Biomass can be used to produce electricity and as fuel for transportation, or to manufacture products that would otherwise require the use of non-renewable fossil fuels.


Hydrogen

Primarily, we can say this is next-generation technology as recyclable energy resource. Hydrogen has tremendous potential as a fuel and energy source, but the technology needed to realize that potential is still in the early stages.

Hydrogen is the most common element on Earth—for example, water is two-thirds hydrogen—but in nature it is always found in combination with other elements. Once separated from other elements, hydrogen can be used to power vehicles, replace natural gas for heating and cooking, and to generate electricity.


Geothermal Energy

The heat inside the Earth produces steam and hot water that can be used to power generators and produce electricity, or for other applications such as home heating and power generation for industry.

Geothermal energy can be drawn from deep underground reservoirs by drilling, or from other geothermal reservoirs closer to the surface.


Ocean Energy

The ocean, the big ocean. As we know we are surroundings by these oceans and it has provides several forms of renewable energy, and each one is driven by different forces.

Energy from ocean waves and tides can be harnessed to generate electricity, and ocean thermal energy—from the heat stored in sea water—can also be converted to electricity. Using current technologies, most ocean energy is not cost-effective compared to other renewable energy sources, but the ocean remains and important potential energy source for the future.

All above, with some home and with some desire to make our planet alive.

To prevent Global Warming We need to maintain few steps

We know, Greenhouse effects just hampering our planets subsistence level. Global Warming Predictions are jumping like following picture :


To prevent Global Warming more, Researchers always trying to find some general methods to restrict this as;

1. Reduce, Reuse, Recycle products instead of disposables.

2. Buying products with minimal packaging (including the economy size when that makes sense for you) will help to reduce waste.

3. Whenever you can, recycle paper, plastic, newspaper, glass and aluminum cans.
[
By recycling half of your household waste, you can save 2,400 pounds of carbon dioxide annually.]

4. Use Less Heat and Air Conditioning can lower your heating costs more than 25 percent, by reducing the amount of energy we can reduce increase of carbon-di-oxide in our air.

5. Turn down the heat while you’re sleeping at night or away during the day, and keep temperatures moderate at all times. Setting your thermostat just 2 degrees lower in winter and higher in summer could save about 2,000 pounds of carbon dioxide each year.

6. Replace regular light bulbs with compact fluorescent light (CFL) bulbs. Replacing just one 60-watt incandescent light bulb with a CFL will save you $30 over the life of the bulb. CFLs also last 10 times longer than incandescent bulbs, use two-thirds less energy, and give off 70 percent less heat.

7. Less driving means fewer emissions. Besides saving fuel, walking and biking are great forms of exercise. Explore your community’s mass transit system, and check out options for carpooling to work or school. Less Driving means more walking also, which is a part of fitness and regular exercise. It can make your health fit too.


8. Home appliances are now in a range of energy-efficient models, and compact florescent bulbs are designed to provide more natural-looking light while using far less energy than standard light bulbs.

9. Avoid products that come with excess packaging, especially molded plastic and other packaging that can't be recycled. If you reduce your household garbage by 10 percent, you can save 1,200 pounds of carbon dioxide annually.

10. Use Less Water, save water for more usages.

It's also a good idea to turn off the water when you're not using it. While brushing your teeth, shampooing the dog or washing your car, turn off the water until you actually need it for rinsing. You'll reduce your water bill and help to conserve a vital resource.

11. Save electricity and reduce global warming by turning off lights when you leave a room, and using only as much light as you need. And remember to turn off your television, video player, stereo and computer when you're not using them.

12. Plant a tree, start digging. During photosynthesis, trees and other plants absorb carbon dioxide and give off oxygen. A single tree will absorb approximately one ton of carbon dioxide during its lifetime.

13. Share information about recycling and energy conservation with your friends, neighbors and co-workers, and take opportunities to encourage public officials to establish programs and policies that are good for the environment.

These few steps will take you a long way toward reducing your energy use and your monthly budget. And less energy use means less dependence on the fossil fuels that create greenhouse gases and contribute to global warming.