[MEXICO CITY] A plant more commonly known for its role in the production of the alcoholic drink tequila has been overlooked as a source of biofuel that would not compete with food crops, say experts. Agave plants can sustain high yields while enduring extreme temperatures, droughts and CO2 increases, with little need for irrigation, according to a series of papers in a special issue of Global Change Biology Bioenergy published last month (February).