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Cambridge University physicist, David Mackay, in a passionate, personal analysis of the energy crisis in the UK, in which he comes to some surprising conclusions about the way forward. The film is based on his new book Sustainable Energy without the hot air, in which Prof Mackay has calculated the numbers involved for the [...] Part 1 of a 2 part series showing how to install a cheap cost effective solar hot water heater.greenpowerscience.com addthis_url = ‘http%3A%2F%2Furban-arcadia.com%2Fpermaculture%2Fsolar-hot-water-shower-diy-black-water-hose-part-1%2F’; Part 2 of a 2 part series showing how to install a cheap cost effective solar hot water heater. greenpowerscience.com addthis_url = ‘http%3A%2F%2Furban-arcadia.com%2Fpermaculture%2Fsolar-hot-water-2-diy-using-black-water-hose%2F’; Sudden Oak Death is a disease that has killed hundreds of thousands of trees in California and Oregon. It has infected large areas of live oak and tanoaks forests. This microscope footage shows the zoospores of Phytophthora ramorum, the causal agent of SOD, emerging from the sporangia. Under the right environmental conditions infectious zoospores are [...] |
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