Tribal tribute

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tal of Moldova, the Eastern province of Romania, into the family of a philosophy professor and a teacher. He was educated at the ‘B.P. Hasdeu’ College of Buzau, in Romania, where in 1930 he earned his bachelor’s degree, followed by graduating the School of Medicine of the University of Bucharest, Romania. His MD thesis had a rather unusual topic: the reconstitution of the nephron of the marine ...

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P Biman Bagchi has made pivotal contributions to the area of dynamics of chemical and biological systems in an academic career spanning more than three decades. He has been a great teacher and mentor for a large number of young theoretical physical chemists of India and a creative and insightful collaborator with leading scientists worldwide. We take great pride in guest editing this special is...

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Vladimir Arnold, an eminent mathematician of our time, passed away on June 3, 2010, nine days before his seventy-third birthday. This article, along with one in the next issue of the Notices, touches on his outstanding personality and his great contribution to mathematics. A word about spelling: we use “Arnold”, as opposed to “Arnol’d”; the latter is closer to theRussian pronunciation, but Vlad...

Darwin tribute

What are scale insects? Scale insects (Hemiptera: Sternorrhyncha: Coccoidea) are a group of small, plant feeding insects closely related to aphids and whiteflies. They are characterized by their unusual shapes, so much so that it is sometimes hard to recognize them as insects or even as animals! Adult females hardly ever move, lacking wings and often even legs. Instead of being able to run away...