ice and rain protection
51Geography of British Columbia — Continent North America Region Western Canada Coordinates …
52Mountaineering — Alpinist redirects here. For the magazine, see Alpinist (magazine). For the practice of closed circuit diving without a bailout, see Rebreather#Bailout. Mountaineer redirects here. For other uses, see Mountaineer (disambiguation). Basecamp… …
53Thunderstorm — Electrical storm redirects here. For other uses, see Electrical storm (disambiguation). A typical thunderstorm A thunderstorm, also known as an electrical storm, a lightning storm, thundershower or simply a storm is a form of weather… …
54Mauna Kea — with its seasonal snow cap visible Elevation 4,205 m (13,796  …
55Timeline of environmental events — Expand list|date=August 2008The timeline of environmental events is a historical account of events that have shaped humanity s perspective on the environment. This timeline includes some major natural events, human induced disasters,… …
56Finland — /fin leuhnd/, n. 1. Finnish, Suomi. a republic in N Europe: formerly a province of the Russian Empire. 5,109,148; 130,119 sq. mi. (337,010 sq. km). Cap.: Helsinki. 2. Gulf of, an arm of the Baltic, S of Finland. * * * Finland Introduction Finland …
57Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
58pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
59Washington (state) — Washington state redirects here. For the university, see Washington State University. State of Washington …
60Humidity — is the amount of water vapor in the air. In daily language the term humidity is normally taken to mean relative humidity. Relative humidity is defined as the ratio of the partial pressure of water vapor in a parcel of air to the saturated vapor… …
