How many Earths do we need? 16 junio, 2015 por Felipe Sahagún | 0 Comentarios How many Earths do we need? –@BBCNews If 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 2015 Entradas relacionadas: El mundo, visto por Stephen Hawkin How many Earths do we need if… (WEF) State of the world’s forests 2016 Planet Earth crosses into ecological red (CSM)