Lesser consumption of animal products is necessary to save the world from the worst impacts of climate change, UN report says.
Click the title of this post to read the article in The Guardian.
Click here to see a graph showing the greenhouse effects of organic versus conventional meat, vegetarian, and vegan diets.
environment, environmentalism, vegetarianism
June 2, 2010
June 1, 2010
May 31, 2010
Mobile phones responsible for disappearance of honey bee
(Telegraph, May 29, 2010)
The growing use of mobile telephones is behind the disappearance of honey bees and the collapse of their hives, scientists have claimed.
Their disappearance has caused alarm throughout Europe and North America where campaigners have blamed agricultural pesticides, climate change and the advent of genetically modified crops for what is now known as 'colony collapse disorder.' Britain has seen a 15 per cent decline in its bee population in the last two years and shrinking numbers has led to a rise in thefts of hives.
Now researchers from Chandigarh's Punjab University claim they have found the cause which could be the first step in reversing the decline: They have established that radiation from mobile telephones is a key factor in the phenomenon and say that it probably interfering with the bee's navigation senses.
They set up a controlled experiment in Punjab earlier this year comparing the behaviour and productivity of bees in two hives – one fitted with two mobile telephones which were powered on for two fifteen minute sessions per day for three months. The other had dummy models installed.
After three months the researchers recorded a dramatic decline in the size of the hive fitted with the mobile phon, a significant reduction in the number of eggs laid by the queen bee. The bees also stopped producing honey.
The queen bee in the "mobile" hive produced fewer than half of those created by her counterpart in the normal hive.
They also found a dramatic decline in the number of worker bees returning to the hive after collecting pollen. Because of this the amount of nectar produced in the hive also shrank.
Ved Prakash Sharma and Neelima Kumar, the authors of the report in the journal Current Science, wrote: "Increase in the usage of electronic gadgets has led to electropollution of the environment. Honeybee behaviour and biology has been affected by electrosmog since these insects have magnetite in their bodies which helps them in navigation.
"There are reports of sudden disappearance of bee populations from honeybee colonies. The reason is still not clear. We have compared the performance of honeybees in cellphone radiation exposed and unexposed colonies.
"A significant decline in colony strength and in the egg laying rate of the queen was observed. The behaviour of exposed foragers was negatively influenced by the exposure, there was neither honey nor pollen in the colony at the end of the experiment."
Tim Lovett, of the British Beekeepers Association, said that hives have been successful in London where there was high mobile phone use.
"Previous work in this area has indicated this [mobile phone use] is not a real factor," he said. "If new data comes along we will look at it."
He said: "At the moment we think is more likely to be a combination of factors including disease, pesticides and habitat loss."
The UK Government has set aside £10 million for research into the decline of pollinators like bees, but the BBKA claim much more money is needed for research into the problem, including studies on pesticides, disease and new technology like mobile phones.
According to the University of Durham, England's bees are vanishing faster than anywhere else in Europe, with more than half of hives dying out over the last 20 years.
The most recent statistics from last winter show that the decline in honey bees in Britain is slowing, with just one in six hives lost.
This is still above the natural rate of ten per cent losses, but a vast improvement on previous years.
There has been an increase in the number of thefts of hives across the world and in Germany beekeepers have started fitting GPS tracking devices to their hives.
The growing use of mobile telephones is behind the disappearance of honey bees and the collapse of their hives, scientists have claimed.
Their disappearance has caused alarm throughout Europe and North America where campaigners have blamed agricultural pesticides, climate change and the advent of genetically modified crops for what is now known as 'colony collapse disorder.' Britain has seen a 15 per cent decline in its bee population in the last two years and shrinking numbers has led to a rise in thefts of hives.
Now researchers from Chandigarh's Punjab University claim they have found the cause which could be the first step in reversing the decline: They have established that radiation from mobile telephones is a key factor in the phenomenon and say that it probably interfering with the bee's navigation senses.
They set up a controlled experiment in Punjab earlier this year comparing the behaviour and productivity of bees in two hives – one fitted with two mobile telephones which were powered on for two fifteen minute sessions per day for three months. The other had dummy models installed.
After three months the researchers recorded a dramatic decline in the size of the hive fitted with the mobile phon, a significant reduction in the number of eggs laid by the queen bee. The bees also stopped producing honey.
The queen bee in the "mobile" hive produced fewer than half of those created by her counterpart in the normal hive.
They also found a dramatic decline in the number of worker bees returning to the hive after collecting pollen. Because of this the amount of nectar produced in the hive also shrank.
Ved Prakash Sharma and Neelima Kumar, the authors of the report in the journal Current Science, wrote: "Increase in the usage of electronic gadgets has led to electropollution of the environment. Honeybee behaviour and biology has been affected by electrosmog since these insects have magnetite in their bodies which helps them in navigation.
"There are reports of sudden disappearance of bee populations from honeybee colonies. The reason is still not clear. We have compared the performance of honeybees in cellphone radiation exposed and unexposed colonies.
"A significant decline in colony strength and in the egg laying rate of the queen was observed. The behaviour of exposed foragers was negatively influenced by the exposure, there was neither honey nor pollen in the colony at the end of the experiment."
Tim Lovett, of the British Beekeepers Association, said that hives have been successful in London where there was high mobile phone use.
"Previous work in this area has indicated this [mobile phone use] is not a real factor," he said. "If new data comes along we will look at it."
He said: "At the moment we think is more likely to be a combination of factors including disease, pesticides and habitat loss."
The UK Government has set aside £10 million for research into the decline of pollinators like bees, but the BBKA claim much more money is needed for research into the problem, including studies on pesticides, disease and new technology like mobile phones.
According to the University of Durham, England's bees are vanishing faster than anywhere else in Europe, with more than half of hives dying out over the last 20 years.
The most recent statistics from last winter show that the decline in honey bees in Britain is slowing, with just one in six hives lost.
This is still above the natural rate of ten per cent losses, but a vast improvement on previous years.
There has been an increase in the number of thefts of hives across the world and in Germany beekeepers have started fitting GPS tracking devices to their hives.
May 28, 2010
Let's look at facts, not hot air, about wind power
Dot Sulack opines at the Asheville Citizen-Times (click here) in an effort to negate the problems with wind energy pointed out by another in an earlier opinion piece. Here are some quick notes about the issues she raises as not issues at all.
Intermittency: "if ... would ... would also ... would be ...." "If ... can ... when ...." How about a study of an existing system? Why so many "if's" when wind turbines are being built right now?
Cost: Most promoters actually want a feed-in tariff to force a higher price for wind. The target of 4 cents/kWh is required by competition and is only possible by taxpayers paying for three-quarters of the cost of building wind and by splitting off the "environmental benefit" as a separate product (i.e., "green tags" or "renewable energy credits"), a trick invented by Enron.
Birds: Birds killed by turbines aren't a problem because other things kill them, too? As pathetic (and potentially sociopathic) an argument as that already is, wind turbines uniquely affect raptors and bats (the latter to such a degree that even the industry shows concern) and tend to erected in migratory pathways, since that's where the wind is. And the more we build them, the worse the effect.
Good for the air and climate: Forgot to provide a link supporting that statement. How many fossil fuel plants have been shut down because of wind on the grid? How much less fuel is burned per unit of electricity consumed because of the addition of wind? I have been unable to find such evidence that wind is "good" for six years now.
Pickens Plan: Con job of the first order. When wind is added to systems without substantial hydro, it needs natural gas plants for the grid to be able to respond quickly to its fluctuations. Rather than replace natural gas for electricity, wind is a plan to use more of it.
The rest is a muddle of more wishful thinking and jingoistic non sequitur, which is par for such pieces.
wind power, wind energy, wind turbines, wind farms, environment, environmentalism
Intermittency: "if ... would ... would also ... would be ...." "If ... can ... when ...." How about a study of an existing system? Why so many "if's" when wind turbines are being built right now?
Cost: Most promoters actually want a feed-in tariff to force a higher price for wind. The target of 4 cents/kWh is required by competition and is only possible by taxpayers paying for three-quarters of the cost of building wind and by splitting off the "environmental benefit" as a separate product (i.e., "green tags" or "renewable energy credits"), a trick invented by Enron.
Birds: Birds killed by turbines aren't a problem because other things kill them, too? As pathetic (and potentially sociopathic) an argument as that already is, wind turbines uniquely affect raptors and bats (the latter to such a degree that even the industry shows concern) and tend to erected in migratory pathways, since that's where the wind is. And the more we build them, the worse the effect.
Good for the air and climate: Forgot to provide a link supporting that statement. How many fossil fuel plants have been shut down because of wind on the grid? How much less fuel is burned per unit of electricity consumed because of the addition of wind? I have been unable to find such evidence that wind is "good" for six years now.
Pickens Plan: Con job of the first order. When wind is added to systems without substantial hydro, it needs natural gas plants for the grid to be able to respond quickly to its fluctuations. Rather than replace natural gas for electricity, wind is a plan to use more of it.
The rest is a muddle of more wishful thinking and jingoistic non sequitur, which is par for such pieces.
wind power, wind energy, wind turbines, wind farms, environment, environmentalism
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