At the most basic level, human evolution is articulated through classifications of, and evolutionary relationships among, hominin species. This article presents a basic taxonomy and phylogeny of ...

It is much smaller than the American robin, Turdus migratorius, which belongs to a different genus. The grouping of families was added to allow the large number of new species to be included in ...

Buzz pollination—a process in which bees extract pollen by vibrating flowers—occurs in more than 20,000 plant species. Among ...