While Rio de Janeiro’s Carnaval wins the attention of millions around the globe with its momentous floats and ostentatious feathery costumes, Salvador, Brazil’s third-largest city, hosts a festival that demonstrates why it is the cultural heart of Brazil. This city of two million hosts a Carnaval lauded for the musical talent that performs during its week-long extravaganza. The festival is noted for its trios elétricos, enormous trucks rigged with state-of-the-art sound systems on top of which Brazilian music stars regal the crowds that flock to Carnaval before Lent begins. In recent years, the trios have converted to B20, a mix of 80% diesel and 20% biodiesel from sugar cane, which reduced the trio’s carbon footprint.
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(The success of the biodiesel fuel industry relies heavily on biodiesel testing <http://www.youtube.com/watch?v=s32Ke2VzrqU>, not only at the production level but at the consumer level, where degraded fuel may cause engine failures. Of major concern to diesel and biodiesel users is the very real possibility that water has contaminated their fuel. (See http://www.youtube.com/watch?v=0YcczdvPyAk). The potential catastrophic impact of this problem is discussed at length in this video at: http://www.youtube.com/watch?v=-lh4qhXc_5s&feature=youtube_gdata.
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