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Thereafter, he moved to Canada to join Allelix Biopharmaceuticals Inc (a part of NPS Pharmaceuticals, Inc, Toronto), as its Vice President and Chief Scientific Officer.
It was named by the New Zealand Geological Survey Antarctic Expedition to northern Victoria Land in 1967–68 for Ian Johnstone, chief scientific officer at Scott Base that season.
He is also Chief Scientific Officer of the IDSIA spin-off AntOptima, whose commercial applications of 'Ant Colony Optimization' include vehicle routing for large commercial truck fleets, and the management of container flow through the largest Mediterranean container terminal.