Bees are vital to the world’s health

This article is concerning as the humble bee is vital to agriculture.

The rise in the use of chemicals in agriculture, including ‘systemic insecticides’ and those used to coat seeds, is being found to be damaging or toxic to bees. Some can, in combination, be even more potent to pollinators, a phenomenon known as the ‘cocktail effect’

These are among the findings of a new report published today by the UN Environment Programme (UNEP), which has brought together and analyzed the latest science on collapsing bee colonies.

The study, entitled Global Bee Colony Disorders and other Threats to Insect Pollinators, underlines that multiple factors are at work linked with the way humans are rapidly changing the conditions and the ground rules that support life on Earth. It shows humans’ large dependency on ecosystem services even for such vital sectors as food production.

It indicates that bees are early warning indicators of wider impacts on animal and plant life and that measures to boost pollinators could not only improve food security but the fate of many other economically and environmentally-important plants and animals.

To read full article go to :  http://africasciencenews.org/asns/index.php?option=com_content&task=view&id=2724&Itemid=2

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Bananas to the rescue…

A water purification system developed recently by Gustavo Castro and his colleagues from Brazil is actually based on banana peels, with no other complex filters or other electronics involved.

As they discovered, banana peels can filter toxic metals such as lead or copper cheaply, unlike some other technologies that use other toxic substances in the manufacturing process, which are dangerous to both humans and the environment.

The researchers had tried to use plant wastes such as coconut fibres and peanut shells before, and they did succeed, just like with the minced banana. Actually, the minced bananas proved themselves better at filtering copper and lead from water than what the researchers had tried before. They also discovered that the purifier can be used for 11 times without compromising the filtration quality.

Taking into account that the researchers have been funded by the São Paulo Research Foundation, probably the first recipients of this new organic technology will be South American, but cheap filters could also be used in Africa, where the energy is scarce and people get sick or even die by drinking contaminated water.

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Fuel Cell Scooter hits European roads soon

With the threat of rising fuel costs perhaps these scooters are the way of the future.

The Suzuki Burgman Fuel Cell Scooter, created in collaboration with Intelligent Energy, a UK-based fuel cell company, has become the world’s first fuel cell vehicle that is about to be approved for mass commercialization. The company also said that the scooter and its components will be produced and sold in Europe.

“Suzuki Motor is pleased to announce that the Suzuki Burgman Fuel Cell Scooter has become the world’s first fuel cell vehicle to earn Whole Vehicle Type Approval in the EU,” said Osamu Suzuki, chairman and CEO of Suzuki Motor.

The Suzuki Burgman scooter has been unveiled in Europe at a London City Hall event last month. It is equipped with the latest version of Intelligent Energy’s air-cooled hydrogen fuel cell system.

“Our aim is to make eco-friendly fuel cell scooters increasingly common in Europe, in line with the establishment of hydrogen filling stations and other necessary infrastructure,” he added.

A fuel cell-powered scooter looks promising, but how about the hydrogen infrastructure, indispensable for normal operation? Well, in countries like Italy or Germany you’ll be able, also soon, to charge your EV or hydrogen vehicle from roadside points, where the energy will come from solar panels.

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Europe has too much wind power


The development of alternative energy has to go hand in hand with a reinforcement of the electrical grid, otherwise the latter will eventually become so busy and will cap the production to its capacity. Such is the case with Germany’s grid, which is an example of an imbalanced structure of solar and wind energy harvesters on one hand and the outdated grid, on the other.

Following a report from published in the NY Times, we find out the opinion of Oxford University economist Dieter Helm, who stated that “basically, governments have allowed the buildup of wind without thinking through the grid consequences. There are two responses: Stop wasting so much on the rapid development of wind and its questionable economics,

In most cases, the proliferation of alternative energy is done by government subsidies, but these are made without taking into consideration that it’s also necessary to invest in the grid. Up to 100 billion euros ($138 billion) are necessary to upgrade the grid over the next decade.

The projected production capacity, the one that’s been heavily invested in, is not always working at maximum parameters, but when that happens, the companies managing the grid need to put a hold on everything, because there’s too much energy to cope with. For example, when wind blew harder in Germany recently, their usual 5 GW reached 20 GW, and cross-border connection with grids in neighboring countries had to be shut down because they couldn’t handle the spike.

Read more: http://www.greenoptimistic.com/2011/03/03/european-supergrid/#ixzz1FbDvcWkm

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UK water use ‘worsening global crisis’

This is an interesting and rather worrying article that I have just read – definitely food for thought…

The amount of water used to produce food and goods imported to developed countries is worsening water shortages in the developing world, a report says.

The report, focusing on the UK, says two-thirds of the water used to make UK imports is used outside its borders. The Engineering the Future alliance of professional engineering bodies says this is unsustainable, given population growth and climate change.

It says countries such as the UK must help poorer nations curb water use.

“We must take account of how our water footprint is impacting on the rest of the world,” said Professor Roger Falconer, director of the Hydro-Environmental Research Centre at Cardiff University and a member of the report’s steering committee. ”If we are to prevent the ‘perfect storm’, urgent action is necessary.” The term perfect storm was used last year by the UK government’s chief scientist, Professor John Beddington, to describe future shortages of energy, food and water.

Forecasts suggest that when the world’s population soars beyond 8billion in 20 years time, the global demand for food and energy will jump by 50%, with the need for fresh water rising by 30%.

But developing countries are already using significant proportions of their water to grow food and produce goods for consumption in the West, the report says.

“The burgeoning demand from developed countries is putting severe pressure on areas that are already short of water,” said Professor Peter Guthrie, head of the Centre for Sustainable Development at Cambridge University, who chaired the steering group.

Embedded in a pint of beer, for example, is about 130 pints (74 litres) of water – the total amount needed to grow the ingredients and run all the processes that make the pint of beer.

A cup of coffee embeds about 140 litres (246 pints) of water, a cotton T-shirt about 2,000 litres, and a kilogram of steak 15,000 litres. Using this methodology, UK consumers see only about 3% of the water usage they are responsible for.

The average UK consumer uses about 150 litres per day, the size of a large bath.

Ten times as much is embedded in the British-made goods bought by the average UK consumer; but that represents only about one-third of the total water embedded in all the average consumer’s food and goods, with the remainder coming from imports.

The UK is not unique in this – the same pattern is seen in most developed countries.

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