Check out this eye catching vegetable, a strikingly purple carrot going by the name of “Purple Sun”. Unlike some other varieties its purple pigment goes from skin to core meaning it’s jam packed with anthocyanins, these basically are what cause the antioxidant effect blue berries and black currents have. The pointed roots of this carrot with rounded shoulders are a great improvement on the older purple carrots, producing uniform roots with strong disease resistance, its purported to have a superb sweet flavour too. These can be harvested as baby carrots or grown onto full size.
March to June
A new piece of solar technology from IBM not only provides electricity – it can desalinate water for sanitation and drinking
Computer giant IBM last week revealed the prototype of its advanced solar electricity generators: a 30ft-high concrete “sunflower” fitted with wafer-thin aluminium mirrors and a maze of tiny tubes for carrying coolant through the heart of each device. The machines, which will be built in conjunction with the Swiss company Airlight Energy, can convert 80% of the sun’s radiation into electricity and hot water, it is claimed, with each generating 12 kilowatts of electricity and 20kW of heat on a sunny day, enough to supply several homes.
At the device’s official unveiling in Zurich, executives for both companies said they hoped that by 2017, when their sunflower generators should be ready for the market, they could be manufactured for half to one-third of the cost of comparable solar converters today. According to IBM, the machine’s secret lies with the microscopic tubes that carry water through the cluster of photovoltaic chips at the heart of each device. This system has already been adopted by IBM to cool its high-performance supercomputers. “We were inspired by the branched blood supply of the human body,” said Bruno Michel, from the IBM Research laboratories in Zurich.
The sunflower operates by tracking the sun so that it always points in the best direction for collecting its rays; these are then focused on to a cluster of photovoltaic cells that are mounted on a raised platform. The cells convert solar radiation into electricity. However, without the microchannel cooling system, which carries distilled water through the chips, temperatures would reach more than 1,000C. With the microcooling system, which carries water to within a few millimetres of the back of each chip, temperatures are kept down to 90C – a far safer, and far more efficient, operating level. Electricity is generated while the system also produces large amounts of hot water from the cooling system. “That hot water is a game changer,” added Michel. “Electricity is obviously vitally useful but so is the heat – for we can use it for desalinating water.”
Berkshire project owners to target water utilities with scheme to cut energy bill
They have become a familiar sight on rooftops and fields across Britain. Now, solar panels are set to start appearing in a new and surprising location: floating on reservoirs.
Britain’s first ever floating solar panel project has just been built in Berkshire, in a scheme its developer claims will act as a blueprint for the technology to be installed at hundreds of sites across the country.
The 800-panel green energy project was installed earlier this month on a reservoir at Sheeplands Farm, a 300-acre soft fruit farm near Wargrave.
The scheme is eligible for renewable electricity subsidies, which are funded by energy bill-payers.
Its owner, Mark Bennett, says that floating panels are even more lucrative than solar farms on fields because no earnings from valuable agricultural land have to be sacrificed to make space for them.
Falling cost of solar photovoltaic panels could help technology generate up to 16% of world’s electricity by mid-century
Solar energy could be the top source of electricity by 2050, aided by plummeting costs of the equipment to generate it, a report from the International Energy Agency (IEA), the West’s energy watchdog, said on Monday.
IEA Reports said solar photovoltaic (PV) systems could generate up to 16% of the world’s electricity by 2050, while solar thermal electricity (STE) – from “concentrating” solar power plants – could provide a further 11%.
“The rapid cost decrease of photovoltaic modules and systems in the last few years has opened new perspectives for using solar energy as a major source of electricity in the coming years and decades,” said IEA Executive Director Maria van der Hoeven.
Solar photovoltaic (PV) panels constitute the fastest-growing renewable energy technology in the world since 2000, although solar is still less than 1% of energy capacity worldwide.
Species across land, rivers and seas decimated as humans kill for food in unsustainable numbers and destroy habitats
The number of wild animals on Earth has halved in the past 40 years, according to a new analysis. Creatures across land, rivers and the seas are being decimated as humans kill them for food in unsustainable numbers, while polluting or destroying their habitats, the research by scientists at WWF and the Zoological Society of London found.
“If half the animals died in London zoo next week it would be front page news,” said Professor Ken Norris, ZSL’s director of science. “But that is happening in the great outdoors. This damage is not inevitable but a consequence of the way we choose to live.” He said nature, which provides food and clean water and air, was essential for human wellbeing.
“We have lost one half of the animal population and knowing this is driven by human consumption, this is clearly a call to arms and we must act now,” said Mike Barratt, director of science and policy at WWF. He said more of the Earth must be protected from development and deforestation, while food and energy had to be produced sustainably.
Ministers reject 40,000 objections to allow fracking below homes without owners’ permission
Fracking will take place below Britons’ homes without their permission after ministers rejected 40,000 objections to controversial changes to trespass laws.
The UK government argued that the current ability for people to block shale gas development under their property would lead to significant delays and that the legal process by which companies can force fracking plans through was costly, time-consuming and disproportionate.
There were a total of 40,647 responses to a consultation on the move to give oil and gas companies underground access without needing to seek landowners’ permission, with 99% opposing the legal changes. Setting aside the 28,821 responses submitted via two NGO campaigns, 92% of the remaining responses objected to the proposals.
The government response to the consultation, published online on the eve of the parliamentary vote on military strikes against Islamic militants in Iraq, concluded: “Having carefully considered the consultation responses, we believe that the proposed policy remains the right approach to underground access and that no issues have been identified that would mean that our overall policy approach is not the best available solution.”
New laws will now be passed giving automatic access for gas and oil development below 300m and a notification and compensation scheme will be run by the industry on a voluntary basis.