full-pressure helmet
61Traumatic brain injury — See also: Brain injury (disambiguation) Traumatic brain injury Classification and external resources …
62Icebiking — (also referred to as snowbiking or winter biking) is the activity of cycling in cold winter weather on roads and paths covered with snow, ice, and slush. In addition to the challenges of cold weather and slippery road surfaces, winter bikers also …
63respiration, human — ▪ physiology Introduction the process by which oxygen is taken up and carbon dioxide discharged. The design of the respiratory system The human gas exchanging organ, the lung, is located in the thorax, where its delicate tissues are… …
64Sunglasses — For the Divine Brown song, see Sunglasses (song). Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against stray light from the sides. Sunglasses or sun glasses are a form of… …
65William Beebe — For the U.S. Army officer and Medal of Honor recipient, see William Sully Beebe. William Beebe William Beebe in British Guiana in 1917 …
66United States Navy Experimental Diving Unit — Navy Experimental Diving Unit Active 1927 Country …
67technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
68Boeing AH-64 Apache — AH 64 Apache An AH 64D Apache from U.S. Army s 101st Aviation R …
69McMaster University — McMaster redirects here. For other uses, see McMaster (disambiguation). McMaster University …
70Alien (Alien franchise) — infobox fictional creature name = Alien caption = A human spawned alien warrior as it appeared in Alien vs. Predator . classification = Alien lifeform first = Alien last = created by = Dan O Bannon Ronald Shusett designed by = H. R. Giger… …
