Founded in 1660, the Royal Society is the independent scientific academy of the UK, dedicated to promoting excellence in science Registered Charity No 207043 rsif.royalsocietypublishing.org Published in Great Britain by the Royal Society, 6–9 Carlton House Terrace, London SW1Y 5AG Review articles Modelling the lymphatic system: challenges and opportunities 601 K. N. Margaris & R. A. Black Research articles An equilibrium for phenotypic variance in fluctuating environments owing to epigenetics 613 O. Carja & M. W. Feldman Computability, Gödel’s incompleteness theorem, and an inherent limit on the predictability of evolution 624 T. Day Tilted cellulose arrangement as a novel mechanism for hygroscopic coiling in the stork’s bill awn 640 Y. Abraham, C. Tamburu, E. Klein, J. W. C. Dunlop, P. Fratzl, U. Raviv & R. Elbaum The global spread of drug-resistant influenza 648 D. L. Chao, J. D. Bloom, B. F. Kochin, R. Antia & I. M. Longini Jr Direct evidence of phospholipids in gecko footprints and spatula–substrate contact interface detected using surface-sensitive spectroscopy 657 P. Y. Hsu, L. Ge, X. Li, A. Y. Stark, C. Wesdemiotis, P. H. Niewiarowski & A. Dhinojwala Biologically inspired crack delocalization in a high strain-rate environment 665 C. Knipprath, I. P. Bond & R. S. Trask Statistical wall shear stress maps of ruptured and unruptured middle cerebral artery aneurysms 677 L. Goubergrits, J. Schaller, U. Kertzscher, N. van den Bruck, K. Poethkow, Ch. Petz, H.-Ch. Hege & A. Spuler A composite computational model of liver glucose homeostasis. I. Building the composite model 689 J. Hetherington, T. Sumner, R. M. Seymour, L. Li, M. Varela Rey, S. Yamaji, P. Saffrey, O. Margoninski, I. D. L. Bogle, A. Finkelstein & A. Warner A composite computational model of liver glucose homeostasis. II. Exploring system behaviour 701 T. Sumner, J. Hetherington, R. M. Seymour, L. Li, M. Varela Rey, S. Yamaji, P. Saffrey, O. Margoninski, I. D. L. Bogle, A. Finkelstein & A. Warner Human-like external function of the foot, and fully upright gait, confirmed in the 3.66 million year old Laetoli hominin footprints by topographic statistics, experimental footprint-formation and computer simulation 707 R. H. Crompton, T. C. Pataky, R. Savage, K. D’Août, M. R. Bennett, M. H. Day, K. Bates, S. Morse & W. I. Sellers Butterfly proboscis: combining a drinking straw with a nanosponge facilitated diversification of feeding habits 720 D. Monaenkova, M. S. Lehnert, T. Andrukh, C. E. Beard, B. Rubin, A. Tokarev, W.-K. Lee, P. H. Adler & K. G. Kornev Staining diatoms with rhodamine dyes: control of emission colour in photonic biocomposites 727 M. Kucki & T. Fuhrmann-Lieker Nanostructural self-assembly of iridescent feather barbules through depletion attraction of melanosomes during keratinization 734 R. Maia, R. H. F. Macedo & M. D. Shawkey Stochastic properties of the plant circadian clock 744 M. L. Guerriero, A. Pokhilko, A. P. Fernández, K. J. Halliday, A. J. Millar & J. Hillston A systems approach to model the relationship between aflatoxin gene cluster expression, environmental factors, growth and toxin production by Aspergillus flavus 757 A. Abdel-Hadi, M. Schmidt-Heydt, R. Parra, R. Geisen & N. Magan Dynamics of alternative modes of RNA replication for positive-sense RNA viruses 768 J. Sardanyés, F. Martínez, J.-A. Daròs & S. F. Elena Mechanically induced structural changes during dynamic compression of engineered cartilaginous constructs can potentially explain increases in bulk mechanical properties 777 T. Nagel & D. J. Kelly Gait recognition: highly unique dynamic plantar pressure patterns among 104 individuals 790 T. C. Pataky, T. Mu, K. Bosch, D. Rosenbaum & J. Y. Goulermas 7 April 2012 volume 9 . number 69 . pages 601–800 J. R. Soc. Interface | vol. 9 no. 69 pp. 601–800 | 7 April 2012 on July 11, 2018 http://rsif.royalsocietypublishing.org/ Downloaded from