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| | The Scorpion |
 | | The result was to end the second Era of advanced life, the Mesozoic, the Age of Dinosaurs, and usher in the third, the Cenozoic, the Age of Mammals. |
 | | As Ward demonstrates, to create a mass extinction event, there must be both stress on the biosphere, and then a trigger, a sudden (in geological terms 50,000 years is "sudden"!) disaster, pushing a struggling biosphere over the edge into catastrophe. |
 | | Ward moves on from the devastation caused by Man on the major land masses to paint a sorry picture, with numerous examples, of the environmental devastation and waves of extinction attendant upon the arrival of humans at island after island, many with unique faunas and floras. |
| thescorp.multics.org /22ward.html (6282 words) |
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