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Showing posts with label Climate Science. Show all posts
Showing posts with label Climate Science. Show all posts

Your City Too Can Soak CO2

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Cities

Worming is big trouble for the entire world community, every one of us is in thought to tackle it anyway.moving for the same, we come to know the our cities even has good potential to soak the principle green house gas.In a major development Scientists recently offered a slender piece of good news about global warming, reporting that cities can be of surprising help in soaking up carbon dioxide (CO 2 ), the principal greenhouse gas.

At first listening it appears a huge surprise, that how the cities, which are blamed to be the major pollutent, hence worming contributor, can be a potential (Co 2) soaker. But truth is that only. Around 4% of the world's land surface is defined as urbanized, a figure expected to surge as the planet's human population rises from seven billion this year to as much as 9.5 billion by mid-century. But unlike forests, urban areas are absent in most calculations of "sinks" where vegetation soaks up CO 2 naturally thanks to photosynthesis.

A new study, though, says the contribution can be significant. British scientists carried out their survey on English city of Leicester. They measured the carbon-absorbing capacity of its parks, domestic gardens, abandoned industrial land, golf courses, school playing fields, road verges and river banks. They found that 231,000 tonnes of carbon were locked up this way, 10 times more than expected. It is roughly equal to the average annual emissions of over 150,000 saloo.

Any way this report brought a big relief to the entire climate worried & concerned world authorities, working on the behalf of entire human beings, infact to all of us.

Do You Want to avoid Warming..! Just lock CO2 in rocks

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Co2 warming
We know well that entire world community is worried about rising warming level of the earth and our scientist community is obsess with various potential solution to at least get some break.In a major such a effort was made recently this year in Iceland.

Earlier in this year, on the steaming fringes of an Icelandic volcano, an international team of scientists will begin pumping "seltzer water" into a deep hole, producing a brew that will lock away carbon dioxide forever. Chemically disposing of CO2,the chief greenhouse gas blamed for global warming, is a kind of 21st-century alchemy that researchers and governments have hoped for to slow or halt climate change.

The American and Icelandic designers of the "CarbFix" experiment will be capitalizing on a feature of the basalt rock underpinning 90% of Iceland: It is a highly reactive material that will combine its calcium with a CO2 solution to form limestone - permanent, harmless limestone. Researchers caution that their upcoming 6-to-12-month test could fall short of expectations, and warn against looking for a climate "fix" from CarbFix any year soon.

In fact, one of the objectives of the project, whose main sponsors are Reykjavik's city-owned utility and US and Icelandic universities, is to train young scientists for years of work to come. A scientific overseer of CarbFix - the man, as it happens, who also is credited with coining the term "global warming" four decades ago - says the world's failure to heed those early warnings, to rein in greenhouse-gas emissions from coal, gasoline and other fossil fuels, is driving scientists to drastic approaches.


"Whether we do it in the next 50 years, or the 50 years after that, we're going to have to store CO2," Columbia University's Wallace S Broecker said in an interview in New York. The world is already storing some CO2. As a byproduct of Norway's natural gas production, for example, it is being pumped into a sandstone reservoir beneath the North Sea. But people worrysuch stowed-away gas could someday escape, while CO2 transformed into stone would not. The experiment will take place below the landscape of this place 29 kilometers southeast of Reykjavik.

The experiment leads various enthusiastic and of course serious question like, would such practices if followed world wide,pose a potential threat for entire planet. What could be its potential consequence if anything goes wrong.Only time will clear the picture and the scope of the experiment.
source:The times of India

 

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