How many Earths do we need?16 junio, 2015 por Felipe Sahagún | Sin comentarios How many Earths do we need? –@BBCNewsIf everyone on the planet consumed as much as the average US citizen, it’s argued, four Earths would be needed to sustain them. Really?http://www.bbc.co.uk/news/magazine-33133712 … 5:54 PM – 16 Jun 2015Entradas relacionadas:El mundo, visto por Stephen HawkinHow many Earths do we need if… (WEF)State of the world’s forests 2016Planet Earth crosses into ecological red (CSM)