Källkritik är en metod som används för att kunna uppskatta hur pass trovärdig och verklighetsförankrad information är. Vem är det som är upphovsman till källan? Vad är källans syfte?
VETT & ETIKETT PÅ NÄTET
På sociala medier som till exempel Facebook och Twitter delar vi med oss av massor av saker som vi tycker och tänker. Det är ett sätt att umgås, ett sätt att visa andra vad du gör och dela med dig av dina intressen och åsikter.
När vi pratar med varandra i vardagen så har vi fått lära oss exempelvis att vi får säga vissa saker och att vissa saker håller man för sig själv för att inte såra någon annan. Detta kallas för normer, det är som oskrivna regler som vi följer för att vi har lärt oss att vi ska göra det.
The large-scale production of edible insects is unavoidable in order to continue feeding the ever-increasing global population and providing them with enough animal protein. Insect farming can be compared with mini livestock farming. It is environmentally friendly, does not require much land and produces high-quality nutrients. Furthermore, as a new sector of the food industry, it will provide a livelihood for large groups of people. This is the basic message contained in the book Edible insects: future prospects for food and feed security, written by researchers at Wageningen University and the Food and Agriculture Organisation of the UN (FAO). The book will be launched in Rome the 13th of May.
At least two billion people currently consume insects on a regular basis. More than 1,900 edible insect species have been identified, including beetles (31 percent), caterpillars (18 percent) and bees, wasps and ants (14 percent).
Research has shown that insects are highly nutritious, healthy and full of proteins, and many species contain as many unsaturated fatty acids (such as omega 3 and 6) as fish. The environmental benefits of insect farming are manifold: insects are much more efficient at converting feed into edible body weight than chickens, pigs or cattle. Furthermore, they emit 50 times fewer emissions than traditional livestock and ten times less amonia. In addition, there is less risk of animal diseases being transmitted to humans.
Whether or not we eat insects ('entomophagy') is largely dictated by culture and religion. It is part of the staple diet in many regions. Here in the West, we tend to brand such behaviour as 'disgusting' and 'primitive'. The authors of the book think that a lot of effort will have to go into devising communication strategies to promote the consumption of insects. Non-Western consumers will have to reinstate insects as a useful source of nutrition rather than copying Western eating habits. New processing methods must be developed to overcome the resistance on the part of Western consumers. These may include grinding the insects or extracting their proteins so that insects cannot be recognised as such anymore.
The scientists concerned envisage a lot of hard work before large-scale insect farming becomes a reality. There will be numerous challenges regarding industrial automated farming methods, processing and preserving techniques, conducive regulations and legislation, and gastronomy.
Despite the existing wealth of knowledge on the advantages of producing and eating insects, the authors want to see prompt, simultaneous answers to four serious questions. More documentation about the nutritional value of insects is needed in order to promote them as a healthy alternative. The effects on the environment must be clarified in order to compare this form of farming with conventional livestock production. There needs to be more certainty about the social-economic benefits of insect farming, particularly with regard to food security in the poorest sections of the population. And finally, a clear and comprehensive system of international regulations must be devised to smooth the path for investments to encourage this new branch of the industry and enable international trade in the sector to develop to its full potential.
A YouTube channel with a fab collection of science videos showing experiments, demonstrations, ideas and bangs. New videos are uploaded regularly and their will delight and education in equal measure. http://ictmagic.wikispaces.com/Science
Japan's Nuclear Regulation Authority has upgraded the severity of the situation at Fukushima, reopening questions about how to deal with the radioactivity?
The contaminated water problem at Fukushima comes from the mountains. Every day, 400 tonnes of groundwater flows down from peaks overlooking the complex, invades the stricken reactor halls and is contaminated. At present, the Tokyo Electric Power Company (Tepco), which runs the plant, redirects the water over the reactor cores to keep them cool. After filtering to remove radioactive caesium, the water is stored in tanks. Huge volumes are being placed in 1060 tanks, each holding up to 1000 tonnes.
Tepco has drilled wells in the mountains to pump out and divert groundwater before it reaches Fukushima. It is even considering creating an "ice wall" around the complex by freezing water in soil.
More prosaically, in March, the company installed new filtering equipment. The advanced liquid processing system (ALPS) filters out caesium and 60 other isotopes. The IAEA says such filtering offers the best hope for cleaning water to a standard fit for dumping at sea. The tanks would then be used for more concentrated waste.
But Tepco halted tests on ALPS this month after corrosion holes developed in an associated tank. It says tests won't resume until December.
"Anything they can do to remove the more dangerous compounds and dilute the others is almost the only solution," says Ken Buesseler of Woods Hole Oceanographic Institution in Massachusetts. Ken says the Kanda estimate is probably the best he is aware of, and closely matches figures released on 21 August by Tepco, of 0.1 to 0.6 TBq per month for caesium-137 and 0.1 to 0.3 for strontium.
He points out that the north Pacific contains an estimated 100,000 TBq of caesium-137 from H-bomb testing in the 1960s, so the fallout from Fukushima is adding only a fraction of that. Total discharges from the Sellafield nuclear plant in the UK released 39,000 TBq over 40 years, he says.
Buesseler says that during his own sampling survey in waters 30 to 600 kilometres from Fukushima in June 2011, three months after the meltdown, the highest levels he found were 3 Bq of caesium-137 per litre of seawater. By comparison, the natural weathering of rocks results in about 10 Bq of radioactive potassium-40 making it into each litre of seawater.
On an international level, even if all the waste from Fukushima was dumped neat into the Pacific, dilution would eliminate any radiation risks to distant countries like the US, says Simon Boxall of the National Oceanography Centre in Southampton, UK.
A great flash game where players must shoot a ball into a hole and use the magnets to help you. There is lots of science to learn in this game including about magnets, gravity and the orbits of space objects. http://ictmagic.wikispaces.com/Science
Download this 'must try' game creating and editing suite from Microsoft. Build characters, objects, scenery and design the structure of the games. Build and play entire worlds. It's an ICT teacher's dream.
Sharing your scoops to your social media accounts is a must to distribute your curated content. Not only will it drive traffic and leads through your content, but it will help show your expertise with your followers.
How to integrate my topics' content to my website?
Integrating your curated content to your website or blog will allow you to increase your website visitors’ engagement, boost SEO and acquire new visitors. By redirecting your social media traffic to your website, Scoop.it will also help you generate more qualified traffic and leads from your curation work.
Distributing your curated content through a newsletter is a great way to nurture and engage your email subscribers will developing your traffic and visibility.
Creating engaging newsletters with your curated content is really easy.