Although igloos are usually associated with all Inuit, they were predominantly constructed by people of Canada's Central Arctic and Greenland's Thule area. Other Inuit people tended to use snow to insulate their houses, which were constructed from whalebone and hides. Snow is used because the air pockets trapped in it make it an insulator. On the outside, temperatures may be as low as −45 °C (−49 °F), but on the inside the temperature may range from −7 °C (19 °F) to 16 °C (61 °F) when warmed by body heat alone.
Image 23A map showing the origin of the first wave of humans into the Americas, including the Ancestral Northern Eurasian, which represent a distinct Paleolithic Siberian population, and the Northeast Asians, which are an East Asian-related group. The admixture happened somewhere in Northeast Siberia. (from Indigenous peoples of the Americas)
Image 25A representation of the domesticated plant species cultivated by Indigenous peoples have influenced the crops that were produced globally. (from Indigenous peoples of the Americas)
Image 32The tomato (jitomate, in central Mexico) was later cultivated by the pre-Hispanic civilizations of Mexico. (from Indigenous peoples of the Americas)
Image 43Indigenous peoples textile art in 1995 by Julia Pingushat, including Inuk, Arviat, Nunavut, Canada, wool, and embroidery floss (from Indigenous peoples of the Americas)
Francisco Javier Eugenio de Santa Cruz y Espejo (Royal Audiencia of Quito, 1747–95) was a medical pioneer, writer and lawyer of mestizo origin in colonial Ecuador. Although he was a notable scientist and writer, he stands out as a polemicist who inspired the separatist movement in Quito. He is regarded as one of the most important figures in colonial Ecuador. He was Quito's first journalist and hygienist. As a journalist he spread enlightened ideas in the Royal Audiencia, and as a hygienist he composed an important treatise about sanitary conditions in colonial Ecuador that included interesting remarks about microorganisms and the spreading of disease.
Espejo was noted in his time for being a satirist. His satirical works, inspired by the philosophy of the Age of Enlightenment, were critical of the lack of education of the Audiencia of Quito, the way the economy was being handled in the Audiencia, the corruption of its authorities, and aspects of its culture in general. Because of these works he was persecuted and finally imprisoned shortly before his death.
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