Edited sentence: "In 1960 Central America still had four fifths of its original forest; now it is left with only two fifths of it.80% will have been lost and with them the natural diversity they contain will pass away forever.A major source of deforestation is the logging industry, driven spectacularly by China and Japan.About half of the mature tropical forests, between 750 to 800 million hectares of the original 1.5 to 1.6 billion hectares that once graced the planet have already been felled.Eighty per cent of the forests of the Philippine archipelago have already been cut down.Forests in Europe suffer from acid rain and vast swathes of Siberia have come under the axe of multinationals since the collapse of the Soviet Union.Half of the Brazilian state of Rondonia's 24.3 million hectares have been destroyed or severely degraded in recent years.However it is in the world's great tropical rainforests where the destruction is most dangerous and where wholesale felling is having the most devastating effect on biodiversity.Many tropical countries, including Indonesia, Thailand, Malaysia, Bangladesh, China, Sri Lanka, Laos, Nigeria, Liberia, Guinea, Ghana and the Cote d'lvoire have already lost large areas of their rainforest.Most of what remains is in the Amazon basin, where the Amazon rainforest covered more than 600 million hectares, an area nearly two thirds the size of the United States.Several countries, notably the Philippines, Thailand and India have declared their deforestation a national emergency.The devastation is already acute in South East Asia, the second of the world's great biodiversity hot spots.The forests are being destroyed at an ever-quickening pace.The world is witnessing an unprecedented destruction of forests worldwide.Unless significant measures are taken on a world-wide basis to preserve them, by 2030 there will only be 10% remaining with another 10% in a degraded condition