undetected
121Dava Sobel — speaking at a Yale event Dava Sobel (born June 15, 1947[1]) is a writer of popular expositions of scientific topics. She graduated from the Bronx High School of Science and Bingham …
122Dark matter — Not to be confused with antimatter, dark energy, dark fluid or dark flow. For other uses, see Dark Matter (disambiguation) …
123D. B. Cooper — A 1972 F.B.I. composite drawing of D. B. Cooper Other names Dan Cooper Occupation Unknown Known for …
124Extrasolar planet — Planet Fomalhaut b (inset against Fomalhaut s interplanetary dust cloud) imaged by the Hubble Space Telescope s coronagraph (NASA photo) …
125Food preservation — Canadian World War I poster encouraging people to preserve food for the winter …
126History of Gibraltar — This article details the history of Gibraltar.PrehistoricEvidence of hominid inhabitation of the Rock dates back to the Neanderthals. A Neanderthal skull was discovered in Forbes Quarry in 1848, prior to the original discovery in the Neander… …
127Geiger counter — Infobox Laboratory equipment name = Geiger counter caption = A modern geiger counter acronym = other names = Geiger Müller counter uses = Particle detector inventor = Hans Geiger manufacturer = model = related = Geiger Müller tubeA Geiger counter …
128Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
