To help compare sizes of different surface areas, we list here areas of the order of 1021 square metres, i.e. those between 1 quadrillion km2 and 10 quadrillion km2. See alsoareas of other orders of magnitude.
... in Mexico; sent out expeditions to Baja California
D
Jacques-Yves Cousteau, (died 1997), French marine biologist and explorer
Alexandra David-Néel, (1868-1969), ...