THE introductory report (No. 1) to the Carlsberg Foundation's Oceanographical Expedition contains an article in memory of its late leader, Prof. Johannes Schmidt, by Martin Knudsen, with portrait ...

Why it's awesome: Antechinuses are little marsupials about the size of gerbils with a bizarre reproductive system: the males have sex until they die from organ failure. There are 15 species of ...

Referring again to Figure 5, the ellipses have been drawn so as to encompass ongoing taxonomic and phylogenetic debates relevant to each genus. As an heuristic device, then, the regions where ...

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 ...

Scientists think that some form of australopithecine is likely to have given rise to the next phase of human evolution, the genus Homo. There have been many species similar to us that have lived over ...