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How Could Nanotechnology Be Green (save) The Environment ?

Mesothelioma causes, treatment and diagnosis discussion

How Could Nanotechnology Be Green (save) The Environment ?

Postby Morvran » Fri Aug 11, 2017 10:32 pm

I am making a speech project about how Nanotechnology could be green for the environment. I need some (specific insight about this phenomena) Please it would be better at a high school level since it's for a speech presentation. For example, how would nanotechnology impact the environment in some positive ways.

I have already looked up on the web about it, but its content is very complex for giving a speech.


Please make it easy understandable for a five minute speech.


Thanks for you help. I really need it, but its complexity is very understandable for me

Thanks again to all of you.
Morvran
 
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Joined: Sun Mar 02, 2014 7:46 am

How Could Nanotechnology Be Green (save) The Environment ?

Postby Tarleton » Fri Aug 11, 2017 10:34 pm

There is enormous public support for investment in sustainable, renewable energy alternatives to coal or nuclear power. There is also growing support for 'green' substitution of toxic chemicals. But all too often industry and governments are prepared to promote new (or old) technologies with a thick veneer of 'greenwash', presenting them as environmental saviours despite evidence of serious environmental risks or challenges. The green hype around nanotechnology fits this pattern.

Nanotechnology, the 'science of the small', enables materials, systems and even living organisms to be manipulated at extremely small scales. Public awareness about nanotechnology remains low. But 'nanoparticles' are already being used ? unlabelled and largely unregulated ? in sunscreens, cosmetics, food packaging and health supplements, fertilisers and pesticides, clothing, electrical goods, household appliances, fuel catalysts, industrial processing and manufacturing.

Nanotechnology is promoted as an unprecedented techno-fix to our climate and energy woes, enabling unfettered economic expansion and consumption while dramatically reducing our environmental footprint. The Howard government's "Smaller, Cleaner, Cheaper, Faster, Smarter" nanotechnology report is just one example of the enthusiasm with which nanotechnology's putative environmental credentials have been used in its promotion.

The CSIRO has gone so far as to suggest that by enabling greatly increased production of cheap solar energy, greater energy and resource efficiency in 'clean' manufacturing, and atomic scale recycling of all inputs, nanotechnology will enable us to 'decouple' resource use from economic expansion.

It is rarely acknowledged that manufacturing nanoparticles and nano-films used in solar cells and elsewhere is extremely energy-intensive; the chemicals required for nano-manufacturing are often highly toxic, as are many nanoparticles themselves; and the carbon nanotubes mooted for use in lightweight superstrong plane parts cause mesothelioma (the deadly cancer previously thought to be caused only by asbestos).

Friends of the Earth has argued that in addition to introducing a new generation of toxic chemicals, nanotechnology is also likely to underpin a new wave of industrial expansion and economic globalisation that will magnify existing resource and energy use.

Future nanotechnology-based environmental gains are often touted in an effort to win public 'hearts and minds' and to head off unease about the health and environmental risks of nanoproducts that are now entering homes, workplaces and ecosystems. The problem is that while a very high level of proof is demanded of those calling for regulation of nanotechnology's environmental risks, claims of environmental benefits have largely passed unchallenged and unassessed.

There is yet to be any life-cycle assessment comparing the sustainability of conventional and nanotechnology-based products. However there is emerging evidence that any environmental gains achieved by nanotechnology may be outweighed by the environmental costs of production.
Tarleton
 
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How Could Nanotechnology Be Green (save) The Environment ?

Postby Naaman » Fri Aug 11, 2017 10:38 pm

a plausible revolution in architectural layout: -how can substitute the way we do city making plans (on a macroscopic and on a construction to construction point) to develop the performance of water transport. -is there a extra effective thank you to layout homes in those regards? how plenty could be stored on a individual point, a city point, and a countrywide point. -what new layout would desire to be carried out (engineering for sure would desire to play a great area in this subject count) blah blah, and so on. and so on.
Naaman
 
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