A longstanding suspicion that guano (bird droppings) from offshore islands drove the success of coastal communities in what is now Peru, probably sustaining the Inca Empire, has received scientific ...

Abstract: Since the publication of the original paper on power system stability definitions in 2004, the dynamic behavior of power systems has gradually changed due to the increasing penetration of ...

Document management is an important yet time-consuming process — especially if you’re not using an electronic system to help you. A computerized filing system can assist with creating, storing, ...

The endocrine system is a complex network of glands and organs. It uses hormones to control and coordinate your body's metabolism, energy level, reproduction, growth and development, and response to ...

An ancient and deeply spiritualized wooden idol of the Andean ‘Earth Maker’, Pachacamac (Quechua: Pachakamaq), was once worshiped at the Temple of the Sun; a 30,000-square-meter step pyramid at the ...

The musculoskeletal system is an organ system comprising the bones, muscles and connective tissues (including cartilage, tendons and ligaments) that bind tissues and organs together. The main ...

On August 29, 1533, the Incan King Atahualpa, who only ruled for one single year, was ordered by Francisco Pizarro (1471-1541) to be strangled to death by a garrot. This single act martyred Atahualpa ...

The Millennium Simulation Project is a series of computer simulations run since 2005 to understand how galaxies and galaxy clusters form and come together to create large-scale filamentary structures.