A recent article in the July issue of Science magazine (URL above) features an analysis and consensus of "beneficial biofuels" by a leading group of American scientists from the University of Minnesota, Princeton University, the Massachusetts Institute of Technology (MIT) and the University of California, Berkeley. The discussion is a synthesis of year-long conversations and debates among leading biofuel experts in the United States. Although biofuels can have the potential to compete with food and land resources, proper planning and implementation can lead to "multiple benefits". Careful selection of the biofuel feedstock which give the most positive impacts on energy security, greenhouse gas emissions, biodiversity and sustainability of food supply is key. Many "next generation" biofuel feedstocks have low "life cycle emissions", and these feedstocks also exert minimum competition with food. The consensus is to focus on the following renewable biomass feedstocks: (1) perennial plants grown on degraded lands abandoned from agricultural use, (2) crop residues, (3) sustainably harvested wood and forest residues, (4) double crops and mixed cropping systems, and (5) municipal and industrial wastes..