Spontaneous Osteonecrosis of the Knee - SONK. Also known as: Ahlbackâs disease. A condition of unknown aetiology characterized by the development of an area of osteonecrosis on the weight-bearing surface of the medial femoral condyle.
Friday 8 November 2013 09.16 EST First published on Friday 8 November 2013 09.16 EST. When 33 Chilean miners were hauled to the surface after 69 days trapped in a collapsed copper mine in 2010, more than a billion people around the world tuned in to watch as the rescue was broadcast live on television.
Preface: The Chernobyl Accident. On 26 April 1986, the most serious accident in the history of the nuclear industry occurred at Unit 4 of the Chernobyl nuclear power plant in the former Ukrainian Republic of the Soviet Union.reface: The Chernobyl Accident. On 26 April 1986, the most serious accident in the history of the nuclear industry occurred at Unit 4 of the Chernobyl nuclear power plant in the former Ukrainian Republic of the Soviet Union.