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  • As radar satellites reach ever higher resolutions, they are exciting both scientists and the military. Can they make money too? Quirin Schiermeier reports.

    • Quirin Schiermeier
    Business Feature

  • Chemists can make liquid fuel from biomass — or from coal. Heidi Ledford weighs up the pros and cons.

    • Heidi Ledford
    Business Feature

  • Brazil's sugar-cane ethanol industry is the world's best and able to get better, says Emma Marris.

    • Emma Marris
    Business Feature

  • To move US biofuels beyond subsidized corn will be a challenge, reports Katharine Sanderson.

    • Katharine Sanderson
    Business Feature