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quote:Originally posted by Basshttp://sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/03/10/MNGFIBN6PO1.DTLThis article appeared in the San Francisco Chronicle March 10. Anyone have a hypotheis?
quote:Originally posted by akubaYea well, the mayas also gave blood from their genitals...
quote:Originally posted by michaellaverFirst I like to say that I am no expert I only have an interest and a possible theory. My theory challenges the theories of mass extinction. One thing common on every mass extinction is that not all life dies and always after each extinction there is a more advanced life form. If there was true mass extinction why hasn’t all life been wiped out, not just the life that cannot survive in the new environment.I believe that extinctions are not extinctions at all but a more advanced species that has appeared and is competing better for the available food supplies. This may be because a new food source has become available meaning the species design can be altered. Generally a new food source from plants will be of higher nutritional value meaning that herbivores can develop faster more agile bodies. The carnivores must also develop to catch these herbivores. Those that do not develop die out. A classic evolution scenario where life has advanced and extinction has occurred.What appears to be a major extinction might occur when any animal, plant, fish or bird that makes a significant advancement in design which might result in many other species of the same or different kind being affected.The result is a more diverse range of life on earth as many of the older species are able to continue with life as their own life is not affected by this new species but those species which are affected by the new species are not able to compete. A situation we currently have on earth the wide variety of life with some species that have been around since early life, some since the dinosaurs and some which is new. The concept mentioned in the article http://sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/03/10/MNGFIBN6PO1.DTL about mass extinction every 62 million years may well be true and occurring right now. Using my theory and considering that the human being as the most advanced species, then look at the pressure we are putting on the wild animals of the earth. We are destroying their habitats for a place to live ourselves or to make our lives better. Maybe in the future most other life will become extinct except for that life we require to keep our own lives functioning. This theory also fits in with how life on earth is becoming much more advanced. I.e. First vertebrates à First amphibians à First dinosaurs > First Mammals > First Birds > First Apes > First Intelligent Life. We shouldn’t live in fear of extinction as each step (extinction) has been a step forwards not extinction and a start again.