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Two standard solutions for the ‘Malthusian Trap’ involve institutional reforms and technological progress. Using Easter Island as an example, we investigate the hypothetical role that technological progress and population management reform might have played in preventing the collapse of the island’s civilization. The model includes a composite manufactured good and a composite harvested renewab...

During the preparation of an article dealing with the life and work of Erik M.P. Widmark (1), we were given access to his original documents, various letters and correspondence, and reprints of his scientific papers. This was made possible through the kindness and cooperation of Mrs. Daisy Widmark, wife of the late Dr. Per-Erik Widmark, E.M.P. Widmark's son. We report here a historical event gl...

At the beginning of this century, paediatrics was an art. Skills were learnt from a mentor, picking up tips and anecdotes while standing at your master’s side. Now, as practitioners of child health in the final years of this same century, life has changed. Anecdote and word of mouth have lost credibility and are replaced by scientific scrutiny and the rigour of evidence from carefully controlle...