Mongabay: The number of fires burning in Brazil more than doubled compared with the same period last year. Surprisingly, the news has sparked a Twitter sensation, with more than 120,000 users “tweeting” messages with the hashtag “#chegadequeimadas” about the fires in a 48 hour window. The phenomenon emerged after analysis of satellite data by Brazil’s National Institute for Space Research (INPE) revealed the number of “hot spots” between Jan 1 and Aug 26 reached 41,636 in 2010, up from 17,682 …