大象传媒

Much of Brazil's energy is from renewable sources like hydro-electric schemes or sugar-cane that gets processed inhto ethanol that cars can use for fuel. The Brazilian government says that 44 per cent of the country's energy comes from renewable sources compared with 14 per cent as the world average.
But does clean energy come cost free? Business Daily reports on the choice of sugar-cane for fuel versus sugar-cane for sugar, and land for farming versus land for reservoirs. Plus, with non-renewable fuels like oil, how does Brazil get it from deep in the ocean? An engineer explains.