The genetic feedback mechanism in the human population . Rebellious Angels 1° Homo sum, nihil humani a me alienum puto. (Publio Terenzio Afro) In the last 200 years man seems definitely directed to the overcoming of the classic Prefactors limiting the number of other animal species. Predation hasn’t been a problem any longer for centuries:hearing a human being has been torn to pieces by a big predator is now only a curiosity.
The Solitude of Leonardo da Vinci : Second Part We have to analyse, in detail, some of the words of his statement to understand the real importance of this discovery which anticipates truths that will be explained by modern scientists only at the beginning and in the second half of last century.
The solitude of Leonardo da Vinci : First Part And if you are alone you will completely belong to yourself (Leonardo da Vinci) Everybody knows Leonardo da Vinci. “La Gioconda” is, maybe, the most famous and admired picture of all time. Even the innumerable machines of the Italian genius are well-known. It isn’t so easy to suppose how many publications and studies about Leonardo da Vinci may be found. And yet, in my opinion, I think Leonardo hasn’t really been known in the deepness of his thought.
Overpopulation: mechanism at negative retroaction 4/4 Even more interesting is the epidemic of FELV, the feline leukaemia which affected 17% of street cats in Rome.
Overpopulation: mechanism at negative retroaction 3/4 The latter example explains what happens when a population comes into contact with a new virus and the system or predator-prey, parasite – host sets haven’t yet developed homeostasis. Before getting to balance, mortality may be very high, so that, if a population that had already been in contact with the virus, is present in the ecosystem, the species that comes into contact with it, for the fitst time, may completely disappear.
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