When industrialisation began, little thought was given to its ecological effect. Raw, untreated sewage was allowed to pollute the seas and rivers. Animals were killed for the profit to the point of extinction. The loss of trees through uncontrolled deforestation caused erosion and unstable climate.
Acid rain was caused by poisonous gasses man sent into our atmosphere. Chemicals in pesticides killed animal life. Herbicides destroyed plants. The balance of nature was disturbed.
It is only now we are waking up to the problem. More natural, organic farming is advocated. Legislation controls the disposal waste products into our air and water. Wildlife organisations are becoming more militant in their fight for animal rights. Replanting policies in some part of the world means that our forests should in future be sustainable. We can only hope that growing public awareness and enlightened legislation will produce a new world which is safe for us and will provide a good quality for our future generations.