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Want to ask a biologist a galling question? Hereâ s one theyâ re always stumbling over: Why are there so many kinds of species? How did we wind up in a world that has, for example, 17 distinct kinds ...

An interdisciplinary research team involving the Research Institute of Farm Animal Biology (FBN) in Dummerstorf and the Universities of Rostock, Munich and Vienna has discovered that willow leaves ...