About the cover
November 2007 Volume 25 No 11
Insect pests such as the cotton bollworm Helicoverpa armigera consume a substantial portion of global agricultural outputs. Mao et al. (p 1307) and Baum et al. (p 1322) show that ingestion of transgenic plant material that expresses gene-specific double-stranded RNA can trigger potentially lethal RNA interference in several herbivorous insect pests. Credit: © Alessio Di Leo http://www.alessiodileo.com/
