Humans have achieved the widest range of adaptability to extremes in temperature; for example, culture and technology enable humans to protect themselves under a variety of thermal conditions.
In the 17th century Johannes Kepler, Christiaan Huygens and others began to wonder if improvements to the recently invented telescope would one day enable humans to actually examine some of those other worlds.
Human factors research in Antarctica involves studying ways to enable humans to operate safely and effectively, despite the difficulties put upon us by working in such an extreme environment.
Because this environmental feature, unlike any other encountered by an organism, is always present, highly sophisticated systems have developed to detect gravity and enable humans to maintain their position relative to Earth.
The kidney has evolved so as to enable humans to exist on land where water and salts must be conserved, wastes excreted in concentrated form, and the blood and the tissue fluids strictly regulated as to volume, chemical composition, and osmotic pressure.
Although he believed that certain knowledge was possible and that modern science would one day enable humans to become the masters of nature, he also thought that Skepticism presented a legitimate challenge that needed an answer, one that only he could provide.
