Spanish scientists search for fuel of the future

         Spain scientists hope they have found the fuel of tomorrow: bio-oil produced with algae mixed with carbon dioxide from a factory.  The project, which is still experimental, has been developed over the past five years by Spanish and French researchers at the small Bio Fuel Systems (BFS) company.  US oil giant ExxonMobil plans to invest up to $600 million in research on oil produced from algae.  The other great advantage of the system is that it is a depollutant -- it absorbs the C02 which would otherwise be released into the atmosphere.