ving and to get ahead professionally. The truth is probably a mixture of the two. Finding good problems—problems that la) Prof. G. M. Whitesides Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge, MA 02138.2902 (USA) Fax: (+1)617-495-9857 E-mail: [email protected]

in the air, by simply converting excess CO2 into edible plant mass. Developed by Professor Austin Darragh and Dr JJ Leahy of Limerick University's Department of Chemistry and Environmental Science, the hardy eco-friendly technology uses nothing but the natural elements of sunlight, water, carbon dioxide in the air an

rtments of Anesthesiology and Psychology, Center for Consciousness Studies, The University of Arizona Health Sciences Center, Tucson, Arizona, USA. 'Department of Chemistry, University of Alberta. Edmonton. Alberta. Canada. Correspondence and requests for materials should be addressed to T.J.A.C. SCIENTIFIC REPORTS17:

- ence and engineering is important. Understanding phenomena relevant to energy and the environ- ment leads to new technologies and to the ability 'Department of Chemistry and Chemical Biology, Harvard University. Cambridge, IAA 02138. USA, IMaterlals Science Division. Argonne National Laboratory. Argonne, IL 60439,

a living and to get ahead professionally. The truth is probably a mixture of the two. Finding good problems—problems that Prof. G. M. Whitesides Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge, MA 02138-2902 (USA) Pal: (+1)617.495.98S7 E-mail: gwhitesidesegmwgroup.harv