{"id":465,"date":"2016-02-22T11:52:03","date_gmt":"2016-02-22T10:52:03","guid":{"rendered":"http:\/\/www.vernunftkraft-hessen.de\/wordpress\/?p=465"},"modified":"2016-10-26T19:52:22","modified_gmt":"2016-10-26T17:52:22","slug":"knappe-rohstoffe-wann-bauen-wir-das-letzte-windrad","status":"publish","type":"post","link":"http:\/\/www.vernunftkraft-hessen.de\/wordpress\/2016\/02\/22\/knappe-rohstoffe-wann-bauen-wir-das-letzte-windrad\/","title":{"rendered":"Knappe Rohstoffe &#8211; Wann bauen wir das letzte Windrad?"},"content":{"rendered":"<div>\u201eHeutzutage werden weltweit etwa 400 Terawattstunden Strom durch Wind- und Solaranlagen erzeugt. Die Naturschutzorganisation WWF erhofft sich f\u00fcr einen wirksamen Klimaschutz eine Steigerung auf 25.000 Terrawattstunden bis 2050.<\/div>\n<div>Um dieses Ziel zu erreichen, w\u00e4ren\u00a0<strong>3,2 Milliarden Tonnen Stahl, 310 Millionen Tonnen Aluminium und 40 Millionen Tonnen Kupfer<\/strong>\u00a0n\u00f6tig, schreiben die franz\u00f6sischen Forscher in ihrer Studie. Nur um sich der Gr\u00f6\u00dfenordnung bewusst zu werden: Der Eiffelturm besteht aus gut 7000 Tonnen Stahl. Zugespitzt lie\u00dfe sich sagen, dass wir\u00a0f\u00fcr die weltweite Energiewende allein an Stahl 500.000 Eiffelt\u00fcrme brauchen.\u201c<\/div>\n<div>\u201eDie F\u00f6rdermenge (von Kupfer) von gut 16 Millionen Tonnen pro Jahr k\u00f6nnte die Reserven von etwa 500 Millionen Tonnen, rein rechnerisch, in nur 30 Jahren ersch\u00f6pfen.\u201c<\/div>\n<div><\/div>\n<p><a href=\"http:\/\/green.wiwo.de\/knappe-rohstoffe-wann-bauen-wir-das-letzte-windrad\/\" target=\"_blank\">http:\/\/green.wiwo.de\/knappe-rohstoffe-wann-bauen-wir-das-letzte-windrad\/<\/a><\/p>\n<div class=\"shariff shariff-align-flex-start shariff-widget-align-flex-start\" data-services=\"facebook\" data-url=\"http%3A%2F%2Fwww.vernunftkraft-hessen.de%2Fwordpress%2F2016%2F02%2F22%2Fknappe-rohstoffe-wann-bauen-wir-das-letzte-windrad%2F\" data-timestamp=\"1477511542\" data-hidezero=\"1\" data-backendurl=\"http:\/\/www.vernunftkraft-hessen.de\/wordpress\/wp-json\/shariff\/v1\/share_counts?\"><div class=\"ShariffHeadline\">Diesen Beitrag teilen<\/div><ul class=\"shariff-buttons theme-color orientation-horizontal buttonsize-small\"><li class=\"shariff-button facebook shariff-nocustomcolor\" style=\"background-color:#4273c8\"><a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=http%3A%2F%2Fwww.vernunftkraft-hessen.de%2Fwordpress%2F2016%2F02%2F22%2Fknappe-rohstoffe-wann-bauen-wir-das-letzte-windrad%2F\" title=\"Bei Facebook teilen\" aria-label=\"Bei Facebook teilen\" role=\"button\" rel=\"nofollow\" class=\"shariff-link\" style=\"; 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Die Naturschutzorganisation WWF erhofft sich f\u00fcr einen wirksamen Klimaschutz eine Steigerung auf 25.000 Terrawattstunden bis 2050. Um dieses Ziel zu erreichen, w\u00e4ren\u00a03,2 Milliarden Tonnen Stahl, 310 Millionen Tonnen Aluminium und 40 Millionen Tonnen Kupfer\u00a0n\u00f6tig, schreiben die franz\u00f6sischen Forscher in ihrer Studie. Nur um &hellip; <a href=\"http:\/\/www.vernunftkraft-hessen.de\/wordpress\/2016\/02\/22\/knappe-rohstoffe-wann-bauen-wir-das-letzte-windrad\/\" class=\"more-link\"><span class=\"screen-reader-text\">\u201eKnappe Rohstoffe &#8211; Wann bauen wir das letzte Windrad?\u201c<\/span> weiterlesen<\/a><\/p>\n<div class=\"shariff shariff-align-flex-start shariff-widget-align-flex-start\" data-services=\"facebook\" data-url=\"http%3A%2F%2Fwww.vernunftkraft-hessen.de%2Fwordpress%2F2016%2F02%2F22%2Fknappe-rohstoffe-wann-bauen-wir-das-letzte-windrad%2F\" data-timestamp=\"1477511542\" data-hidezero=\"1\" data-backendurl=\"http:\/\/www.vernunftkraft-hessen.de\/wordpress\/wp-json\/shariff\/v1\/share_counts?\"><div class=\"ShariffHeadline\">Diesen Beitrag teilen<\/div><ul class=\"shariff-buttons theme-color orientation-horizontal buttonsize-small\"><li class=\"shariff-button facebook shariff-nocustomcolor\" style=\"background-color:#4273c8\"><a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=http%3A%2F%2Fwww.vernunftkraft-hessen.de%2Fwordpress%2F2016%2F02%2F22%2Fknappe-rohstoffe-wann-bauen-wir-das-letzte-windrad%2F\" title=\"Bei Facebook teilen\" aria-label=\"Bei Facebook teilen\" role=\"button\" rel=\"nofollow\" class=\"shariff-link\" style=\"; 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