Taron Vienna (1985)

Taron Vienna;, shine taro na farko na ƙasa da ƙasa game da lalata Layer Layer. An gudanar da shi a Vienna, Ostiriya acikin, shekara ta 1985 lokacin da aka ga rami a cikin Layer na ozone na stratospheric a cikin Pole ta Kudu wanda ke nuna karuwar UV-B akan Antarctica. Wani 'rami', wanda akayi masa alama da gagarumin faɗuwar ƙwayoyin Ozone acikin Layer, wanda ya kai na Amurka da wata tawagar Burtaniya ta gano. An amince da yarjejeniyar Vienna don Kariyar Ozone Layer a taron kuma ya fara aiki acikin 1987.  

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 Littafin Ilimin Muhalli na Beeta (don ICSE Examinations) -Buga Beeta (A Morning Star Venture)