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.
Evacuation Soviet authorities started evacuating people from the area around Chernobyl within 36 hours of the accident. The Chernobyl accident: What happened. Reactor Four at the Chernobyl nuclear power plant began to fail in the early hours of 26 April, 1986.