A National Look at the Use of Congregate Care in Child Welfare. congregate care.
The idea of a spherical Earth appeared in Greek philosophy with Pythagoras (6th century BC), although most pre-Socratics (6th â 5th century BC) retained the flat Earth model. Aristotle provided evidence for the spherical shape of the Earth on empirical grounds by around 330 BC.
Christopher Columbus is often miscredited for correcting this idea and discovering the Earthâs curves by not sailing off its edge, but in fact, it was Ancient Greeks, such as Aristotle and Pythagoras, around 2,400 â 2,600 years ago, who first proposed that the Earth was round. But youâre not here for a history lesson.