Organized efforts to seek for extraterrestrial intelligence have used radio telescopes to detect signs of technology use, or technosignatures, given off by alien civilizations. In drugs, new applied sciences have been developed for analysis , treatment , and analysis . An array of Neolithic artifacts, including bracelets, axe heads, chisels, and sprucing toolsThe Neolithic Revolution led to an acceleration of technological innovation, and a consequent increase in social complexity. The invention of the polished stone axe was a major advance that allowed large-scale forest clearance and farming. This use of polished stone axes elevated tremendously in the Neolithic however was originally used within the preceding Mesolithic in some areas such as Ireland. Agriculture fed bigger populations, and the transition to sedentism allowed for the simultaneous raising of extra children, as infants no longer wanted to be carried round by nomads.

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