Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution. Despite the complexity of the science, there are certain unifying concepts that...
Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances. In the scope of...
English is a West Germanic language that was first spoken in early medieval England and eventually became a global lingua franca. Named after the Angles, one of the Germanic tribes that migrated to the area of...
History (from Greek ἱστορία, historia, meaning “inquiry, knowledge acquired by investigation”) is the study of the past as it is described in written documents. Events occurring before written record are considered prehistory. It is an umbrella...
The magazine Hotel Management was established in New York in 1922 by Ahrens Publishers. It absorbed or merged with various other hotel management magazines over the years, including Hotel World, which had been established in 1875....
Mathematics (from Greek μάθημα máthēma, “knowledge, study, learning”) includes the study of such topics as quantity, structure, space, and change. Mathematicians seek and use patterns to formulate new conjectures; they resolve the truth or falsity of...
Philosophy (from Greek φιλοσοφία, philosophia, literally “love of wisdom”) is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language. The term was probably coined by Pythagoras (c....
Physics (from Ancient Greek: φυσική (ἐπιστήμη), translit. physikḗ (epistḗmē), lit. ‘knowledge of nature’, from φύσις phýsis “nature”) is the natural science that studies matter and its motion and behavior through space and time and that studies the related...
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. Tourism may be international, or within the traveller’s...
Wildlife traditionally refers to undomesticated animal species, but has come to include all plants, fungi, and other organisms that grow or live wild in an area without being introduced by humans. Wildlife can be found in...