surge (of current)
91Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
92List of IEC standards — In order to distinguish standards published by the International Electrotechnical Commission numerically from other international standards, their number range was shifted in 1997 by adding 60000. So what used to be called IEC 27 is now… …
93Civil war in Iraq — Civil war/sectarian violence in Iraq Part of Iraq War and Iraqi insurgency Date February 2006 May 2008 …
94Disaster medicine — is the area of physician medical specialization serving the dual areas of providing medical care to disaster survivors and providing medically related disaster preparation, disaster planning, disaster response and disaster recovery leadership… …
95Industrial Review — ▪ 1994 Introduction The period since 1990 was proving a difficult time for the older industrialized economies, which had suffered from prolonged recession at home, and also for the previously centrally planned economies of Eastern Europe… …
96Late-2000s recession — This article is about economic recession during the early twenty first century. For background financial market events dating from 2007, see Late 2000s financial crisis. Late 2000s recession around the world Africa Americas South America United… …
97Tsunami — For other uses, see Tsunami (disambiguation) …
98Ground loop (electricity) — In an electrical system, a ground loop usually refers to a current, generally unwanted, in a conductor connecting two points that are supposed to be at the same potential, often ground, but are actually at different potentials. Ground loops… …
99Influenza vaccine — A vaccine is an inoculation designed to increase immunity against a specific disease. The influenza vaccine is an annual vaccine to protect against the highly variable influenza virus. Purpose and benefits of annual flu vaccination Influenza… …
100Retreat of glaciers since 1850 — The retreat of glaciers since 1850, worldwide and rapid, affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier melt, and in the longer term, the level of the oceans …
