History (from Greek ἱστορία, historia, meaning "inquiry, knowledge acquired by investigation") is the study of the past, specifically how it relates to humans. It is an umbrella term that relates to past events as well as the discovery, collection, organization, and presentation of information about these events. The term includes cosmic, geologic, and organic history, but is often generically implied to mean human history. Scholars who write about history are called . Events occurring prior to wr..
The Mars Society is a space-advocacy non-profit organization dedicated to promoting the human exploration and settlement of the planet Mars. Inspired by "The Case for Mars" conferences which were hosted by The Mars Underground at the University of Colorado Boulder and established by Dr. Robert Zubrin and many others in 1998, the organization works to educate the public, the media and government on the benefits of Mars exploration and the importance of planning for a Earth-to-Mars mission in the coming dec..
A stroke, sometimes referred to as a cerebrovascular accident ( CVA), is the rapid loss of brain function due to disturbance in the blood supply to the brain. This can be due to ischemia (lack of blood flow) caused by blockage (thrombosis, arterial embolism), or a hemorrhage. As a result, the affected area of the brain cannot function, which might result in an inability to move one or more limbs on one side of the body, inability to understand or formulate speech, or an inability to see one side of the vi..
