EditorialCement mix containing calcium carbonate, produced from the carbon dioxide from the boilers at a Manhattan apartment building, at Glenwood Mason Supply, a concrete plant in Brooklyn, on Feb. 15, 2023. (Hiroko Masuike/The New York Times)
EditorialCement mix containing calcium carbonate, produced from the carbon dioxide from the boilers at a Manhattan apartment building, at Glenwood Mason Supply, a concrete plant in Brooklyn, on Feb. 15, 2023. (Hiroko Masuike/The New York Times)
EditorialRound pot with wide bottom. Neck widened conically. Round vaulted mouth. On the shoulder three horizontal ears., Vase, pot, gypsum stone, calcium sulphate, 8.5 cm, LC II B - II C -1400.
EditorialLittle egret, standing in shallow water, with reed., Ohara Koson (mentioned on object), 1900 - 1930, paper, calcium oxide, colour woodcut, h 242 mm ? w 250 mm.
EditorialLittle egret, standing in shallow water, with reed., Ohara Koson (mentioned on object), 1900 - 1930, paper, calcium oxide, colour woodcut, h 242 mm ? w 250 mm.
EditorialPamukkale, in Turkish " Cotton Fortress", is a plateau formed by the travertine deposits of the calcium-oxide bearing waters of a stream coming from the slope of Caldag-Mountain. It is the site of Hierapolis, a Roman and Early Christian settl...
EditorialPamukkale, in Turkish " Cotton Fortress", is a plateau formed by the travertine deposits of the calcium-oxide bearing waters of a stream coming from the slope of Caldag-Mountain. It is the site of Hierapolis, a Roman and Early Christian settl...