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O prazo para que a meta seja alcançada é de cinco anos, conforme anunciado pelo prefeito Michael Bloomberg

O projeto de Bloomberg inclui a abertura de duas centrais, uma para trabalhar resíduos orgânicos e outra para reciclar os resíduos das casas e empresas. (Fotografia: Creative Commons)

São Paulo – A cidade de Nova York estabeleceu a meta de reduzir pela metade a quantidade de resíduos que são destinados aos aterros. O prazo para que a meta seja alcançada é de cinco anos, conforme anunciado pelo prefeito Michael Bloomberg.

O plano divulgado na última semana reflete o compromisso das autoridades municipais em incentivar a reutilização e consumo consciente, como táticas para reduzir a quantidade de materiais descartados normalmente. A medida deverá retomar o programa de reciclagem residencial, que fora negligenciado e tem apenas 15% de sua meta alcançada até o momento. O alvo é de que até 2017, 30% do lixo, ou seja, 550 mil toneladas, deixem de ser enviadas aos aterros.

“Se nós vamos ser a cidade mais inovadora do mundo, nós também temos que ser a mais verde – porque é assim que você atrai os indivíduos mais talentosos e as empresas mais avançadas”, declarou o prefeito nova-iorquino.

O projeto de Bloomberg inclui a abertura de duas centrais, uma para trabalhar resíduos orgânicos que sejam destinados à compostagem, e outra para reciclar os resíduos das casas e empresas. A cidade também irá trabalhar com as embalagens de plásticos rígido, como copos de iogurte e frascos de medicamentos, em uma usina que será instalada no Brooklyn em 2013.

A cidade de Nova York, que atualmente conta com 600 posto de coleta de itens recicláveis, deve ter mil deles, até 2014. Mesmo com estas metas, os norte-americanos ainda consideram o esforço da metrópole pequeno, em vista do que outras cidades do país têm feito. Mesmo assim, os ambientalistas se apresentaram otimistas com as propostas e envolvimento do prefeito Bloomberg.

Além de reduzir os impactos ambientais, o programa irá trazer benefícios financeiros à cidade. Nova York deverá economizar 55 milhões de dólares, dos 300 milhões que gasta constantemente com os trabalhos de gestão de resíduos em aterros sanitários. O vice-prefeito Caswell Holloway também lembra que os esforços devem resultar na redução de 7% das emissões ligadas ao transporte e manejo de lixo.

Fonte: Exame / CicloVivo
Original: http://bit.ly/yRMBMr


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Brown seaweed holds sugars which can be converted into renewable fuels and chemicals. (Source: Bio Architecture Lab, Inc)

Scientists have genetically engineered microbes to process brown seaweed into biofuel.

The work by researchers including Dr Yasuo Yoshikuni from Seattle’s Bio-Architecture Lab could see large underwater farms become a source of renewable energy.

Scientists focused on brown seaweed because its high sugar content provides a good biomass, and the seaweed doesn’t compete with food crops for land and fresh water.

However Yoshikuni says, “The seaweed uses a different type of carbohydrate called an alginate which can’t be broken down by the land based E. coli bacteria normally used in industry”.

“This bottleneck means biofuel from seaweed is too expensive to compete with regular petroleum-based fuels,” says Yoshikuni.

To overcome the problem, Yoshikuni and colleagues examined a marine microbe called Vibrio splendidus, which naturally metabolises and consumes seaweed in the ocean.

“We don’t know if we can scale up these microbes so we genetically engineered terrestrial E. coli microbes instead,” says Yoshikuni.

Reporting in the journal Science, Yoshikuni and colleagues successfully isolated a 36,000 base pair DNA fragment from V. splendidus which encodes enzymes that metabolise alginate.

“Using synthetic biology and enzyme engineering, the DNA strand was spliced into the E. coli bacteria, which was then able to digest the sugar polymers in the seaweed converting them into ethanol,” says Yoshikuni

Sustainable
The researchers say if this process can be successfully scaled-up, seaweed could help meet the growing demand for sustainable fuel.

According to Yoshikuni there are already commercial processes for aqua farming of seaweed especially in Asia with 15 million tonnes produced annually.

“Using three per cent of the world’s coastlines we can replace five per cent of total oil consumption. That’s 60 billion gallons of fuel”

Yoshikuni says it would be grown on long submerged ropes.

“We seed the juvenile seaweed onto long ropes which are dangled into the sea and the seaweed grows on these ropes getting all its nutrients from the sea and Sun,” says Yoshikuni. “The harvested seaweed would be fed to the genetically engineered E. coli, with the ethanol refined in a similar way to existing processes.”

“We are currently looking into the environmental impact of the project on a commercial scale.”

Yoshikuni says seaweed also absorbs industrial waste such as phosphorus and nitrogen, which can help reduce the incidence of algal blooms.

“We believe seaweed is green energy and can become the most sustainable and upscaleable biomass for the next generation.”

Author: Stuart Gary
Source: ABC News
Original: http://bit.ly/wH1Z54


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O carro do futuro da Peugeot é o conceito EX1, um esportivo elétrico de 340 cv de potência criado em comemoração aos 200 anos da marca. Medindo 90 cm de altura e 1,77 m de largura, ele tem carroceria de fibra de carbono e espaço para dois passageiros. Segundo a montadora, o design foi pensado para evocar a imagem de uma “gota de água” já que a zona traseira do carro se comprime sobre duas rodas muito próximas.

Este esportivo leva apenas 3,58 segundos para passar de 0 a 100 km/h,e 6,6 segundos para atingir a velocidade máxima – nada mais, nada menos que 260 km/h. A propulsão é feita por dois motores elétricos com baterias de lítio que garantem uma autonomia de 450 km. O Peugeot EX1 será apresentado no Salão de Automóveis de Paris, que começa no dia 30 de setembro.

Autor: Vanessa Barbosa
Fonte: Exame
Original: http://bit.ly/xuu7qs


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Ximena Prugue, winner of last year’s WED blogging competition, with UNEP Executive Director Achim Steiner and World Environment Day 2011 participants in India.

Nairobi, 18 January 2012 – The United Nations Environment Program (UNEP), in partnership with TreeHugger, is pleased to launch the third World Environment Day (WED) blogging competition.

The winner will receive a free trip to Brazil – the host of this year’s World Environment Day on 5 June 2012 – to write, blog and tweet about WED events in the country.

Bloggers are invited to enter the competition via online submissions of blog articles on the Green Economy. This ties in with the overall WED 2012 theme – Green Economy: Does It Include You? – which aims to highlight opportunities for moving towards low carbon, resource-efficient and socially inclusive sustainable development.

To enter, bloggers can post a link to Green Economy stories on the UNEP Facebook page http://facebook.unep.org with this comment, “I just entered to win a trip to Brazil for UNEP’s World Environment Day 2012. Read my blog post and discover how the Green Economy includes you.

Entries must be made between 16 January and 12 February 2012.

To increase your chances of winning, post your story on Twitter with the hash tag #WED2012, and encourage friends to comment, ‘like’ the post on Facebook, and retweet your post across Facebook and Twitter.

The top ten bloggers, selected by a UNEP-TreeHugger jury, will be invited to a take part in a second round of blogging – a blogdown!

The winner of this blogging showdown will be determined by an online community via the World Environment Day website. Shortlisted bloggers will be awarded one vote for every ‘like’ that their entry receives online.

The blogger who accumulates the most votes by the end of April 2012 will win the competition and be invited to travel to Brazil to blog about World Environment Day.

The short-listed and winning posts will be published on TreeHugger and the World Environment Day websites.

What’s included in the prize?

Flights, accommodation, visa costs and travel within Brazil to WED events will be covered.

Timing:

World Environment Day is on 5 June 2012. The competition winner will be flown to Brazil for three days, beginning June 3rd and ending June 6th 2012.

Costs:

Entrants will be expected to ensure they are able to travel to Brazil during the period above and to cover any other costs (e.g. vaccinations).

For all terms and conditions, please visit: http://www.unep.org/wed/blog/

More information on the Green Economy can be found at: http://www.unep.org/greeneconomy

For more information, please contact:

Enock Chinyenze, United Nations Environment Programme, Phone: +254 20 762 1551, E-mail: enock.chinyenze@unep.org

Original: UNEP News Centre
Source: http://bit.ly/AbsgFv


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