macrobiology
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Richard C. Hoagland — Infobox Person name = Richard C. Hoagland image size = caption = birth name = birth date = birth date and age|1945|4|25 birth place = residence = Placitas, New Mexico, USA nationality = known for = Research on the existence of extraterrestrial… … Wikipedia
Tufa — Not to be confused with tuff, a porous volcanic rock. This article is about the geological formation. For the historic Chinese name, see Southern Liang. Tufa columns at Mono Lake, California Tufa is a variety of limestone, formed by the… … Wikipedia
Opportunism — Opportunity Seized, Opportunity Missed. Engraving by Theodoor Galle, 1605. Contents 1 General definition … Wikipedia