A supervolcano is a volcano capable of producing a volcanic eruption with an ejecta mass greater than 1015 kg (1012 t). Supervolcanoes occur when magma in the mantle rises into the crust but is unable to break through it and pressure builds in a large and growing magma pool until the crust is unable to contain the pressure. This can occur at hotspots (for example, Yellowstone Caldera) or at subduction zones (for example, Toba).
Homo habilis. An extinct hominid of the genus Homo that lived between 2.3 and 1.4 million years ago in Africa in the early Pleistocene period. H habilis was short, but had a less protruding face and a higher, rounder and larger brain cavity (Â±650 cc) than Australopithecus (Â±450 cc).
Homo sapiens sapiens. Homo sapiens (Latin: wise man) is the binomial nomenclature (also known as the scientific name) for the only extant human species. Homo is the human genus, which also includes Neanderthals and many other extinct species of hominid; H. sapiens is the only surviving species of the genus Homo. Modern humans are the subspecies Homo sapiens sapiens, which differentiates them from what has been argued to be their direct ancestor, Homo sapiens idaltu.