tag:blogger.com,1999:blog-33646836.post4093829696867483829..comments2023-09-22T12:10:47.897+02:00Comments on Risorse, Economia e Ambiente: I rifiuti di Granada III - non c'è peggior disgrazia che esser ciechi a GranadaUgo Bardihttp://www.blogger.com/profile/18231859786466899924noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-33646836.post-20186726763974601172008-06-02T14:32:00.000+02:002008-06-02T14:32:00.000+02:00Stasera vi racconto con calma; ho conosciuto gente...Stasera vi racconto con calma; ho conosciuto gente interessantissima al convegno!!Ugo Bardihttps://www.blogger.com/profile/18231859786466899924noreply@blogger.comtag:blogger.com,1999:blog-33646836.post-50319549486298041432008-06-02T09:44:00.000+02:002008-06-02T09:44:00.000+02:00Post estremamente (d)istruttivo Ugo. Come anche i...Post estremamente (d)istruttivo Ugo. Come anche il primo commento di anonimo.<BR/><BR/>E' chiaro che nei prossimi 10-20 anni ci attende un declino da risorse fossili.<BR/><BR/>Gli Europei del medioevo sono stati salvati dal carbone per 3 secoli, gli uomini delle 2 grandi guerre sono (siamo) stati salvati dal petrolio.<BR/><BR/>Intanto, siamo cresciuti sia in numero, che in intensità energetica, che in dipendenza dai fossili.<BR/><BR/>Per forgiare i metalli mi risulta che non esistono ancora tecnologie di concentrazione solare disponibili, non so se per via elettrica si può fare qualcosa. n ogni caso, utilizzare le foreste come sorgente di carbone di legna, per soddisfare il nostro bisogno energetico in campo metallurgico, potrebbe avere conseguenze anche peggiori di quelle dei biocombustibiliFrank Galvagnohttps://www.blogger.com/profile/08016853206578810654noreply@blogger.comtag:blogger.com,1999:blog-33646836.post-26649342171361511742008-06-01T19:28:00.000+02:002008-06-01T19:28:00.000+02:00è istruttivo leggere l'articolo sulla deforestazio...è istruttivo leggere l'articolo sulla deforestazione, nell'edizione inglese di Wikipedia. Credo che pochi si rendano conto di quanto già siamo andati vicini al tracollo ecologico in tempi non sospetti:<BR/><BR/>"From 1100 to 1500 AD significant deforestation took place in Western Europe as a result of the expanding human population. The large-scale building of wooden sailing ships by European (coastal) naval owners since the 15th century for exploration, colonization, slave – and other trade on the high seas and (often related) naval warfare (the failed invasion of England by the Spanish Armada in 1559 and the battle of Lepanto 1577 are early cases of huge waste of prime timber; each of Nelson's Royal navy war ships at Trafalgar had required 6000 mature oaks) and piracy meant that whole woody regions were over-harvested, as in Spain, where this contributed to the paradoxical weakening of the domestic economy since Columbus' discovery of America made the colonial activities (plundering, mining, cattle, plantations, trade ...) predominant."<BR/><BR/>E ancora:<BR/><BR/>"Europeans had lived in the midst of vast forests throughout the earlier medieval centuries. After 1250 they became so skilled at deforestation that by 1500 AD they were running short of wood for heating and cooking. They were faced with a nutritional decline because of the elimination of the generous supply of wild game that had inhabited the now-disappearing forests, which throughout medieval times had provided the staple of their carnivorous high-protein diet. By 1500 Europe was on the edge of a fuel and nutritional disaster, [from] which it was saved in the sixteenth century only by the burning of soft coal and the cultivation of potatoes and maize." <BR/><BR/>http://en.wikipedia.org/wiki/DeforestationAnonymousnoreply@blogger.com