quaternary quaternary in the geologic history of earth a unit of time within the cenozoic era beginning 2588000 years ago and continuing to the present day the quaternary has been characterized by several periods of glaciation the ice ages of common lore when ice sheets many kilometres thick have.
Yes global warming is real and most of the recent increases in temperature are directly the result of human actions however a number of predictions publicized in the media present unrealistic scenarios of doom and gloom.
The basic requirements for life support are breathing mix an atmosphere to breath or the crew will rapidly suffocate oxygen must be added as it is consumed and carbon dioxide removed as it is exhaled humidity must be maintained at a confortable level.
75 could the mbcs main belt comets comets in the asteroid belt be comets from the kuiper belt or oort cloud that have become trapped in asteroidlike orbits published dynamical simulations suggest not having failed to reproduce the transfer of comets to mainbelt orbits henry h hsieh and david c jewitt a population of comets in the main asteroid belt science vol 312 28.
A research team led by woods hole oceanographic institution whoi found the fingerprint of a massive flood of fresh water in the western arctic thought to be the cause of an ancient cold snap.
Summer 2018 editorial comment amp staff stuff editorial comment h g wellsthe shape of things to come 1936 drew upon the horrors of wwi chemical warfare projecting it into the futureyet who today would have thought that in the early 21st century a nerve agent would be employed in a hostile act in peacetime britain.
Table 1 size analysis of animals aboard the ark page numbers refer to woodmorappe 1996 from which the figures in the row are takenminor arithmetic errors in totals are corrected woodmorappe treats many animals as juveniles yearling masses are.