Beginning of Essay
So, what is ? When is it coming and what is its cause? It is happening now, and we, the human race are its cause explains Richard Leakey. This phenomenon Leakey argues, is easily comparable with the big five biological crisis' of geological history, except this ....

Middle of Essay
.... inside the next 100 years; mankind is using almost half of the energy available to sustain life on the planet, and this figure will grow as population jumps in the next 50 years from 6 billion to approximately 10 billion. Now, with the use of satellite imagery of much of the world's surface, doubts have been laid to rest about whether such alarming statistics are of real concern. The answer is beyond a reasonable doubt that at the current rate of destruction, tropical forests for example, will be reduced to 10 percent of their original cover in the next 50 years. The ultimate implication to all this, as Leakey attests is that the world is fa ....