Ethanol

New Zealand biofuel firm Lanzatech says proprietary microbe uses steel factory emissions to help produce ethanol

Corn ethanol industry accuses EPA of influencing independent panel to boost support for controversial biofuel carbon life cycle regulations

Low-interest loans provided for renewable power and energy efficiency projects

Texas-based firm launches mini-ethanol refineries for firms looking to make their own biofuel

Agencies release biofuel targets and unveil $1.8bn in funding designed to accelerate switch to second generation fuels

US government financial analysts say ethanol production may have no long-term CO2 benefits

Poet inks deal to assess viability of 1,700-pipeline network to link Midwestern producers with markets in the North East

Oil giant takes larger stake in developer of enzymes that are key to production of second generation biofuels

Having signalled his support for biofuels, Obama now faces calls to increase amount of ethanol that can be blended with conventional fuels

Debate over merits of corn-based ethanol heats up as campaigners remain divided on whether Obama should scrap generous subsidies