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61Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
62Apollo 15 — Infobox Space mission mission name = Apollo 15 insignia = Apollo 15 insignia.png stats ref = cite web |url=http://history.nasa.gov/SP 4029/Apollo 00g Table of Contents.htm |title= Apollo by the Numbers: A Statistical Reference (SP 4029)… …
63List of spaceflight-related accidents and incidents — Death in space redirects here. For death in specifically outer space conditions, see Space exposure. Space Shuttle Challenger disintegrates 73 seconds after launch, due to hot gases escaping the SRBs leading to structural failure of the external… …
64GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… …
65K2 — This article is about the South Asian mountain. For the mountain in Alberta, see Mount K2. For other uses, see K2 (disambiguation). K2 K2, summer 2006 …
66Cryptorchidism — Classification and external resources ICD 10 Q53 …
67History of evolutionary thought — This article is about the history of evolutionary thought in biology. For the history of evolutionary thought in the social sciences, see Sociocultural evolution. For the history of religious discussions, see History of the creation evolution… …
68Moon landing — For other uses, see Moon landing (disambiguation). Still frame from the video transmission of Neil Armstrong stepping onto the surface of the Moon at 02:56 UTC on 21 July 1969. An estimated 500 million people worldwide watched this event,… …
69Mount Kenya — Elevation 5,199 m (17,057 ft) …
70Grade (climbing) — Rock climbing History Styles Technique Equipment and protection Grades (difficulty of climb) Terminology Belaying Abseiling …
