- Ancient Greece, Science, Technology
http://www.mlahanas.de/Greeks/Greeks.htm
Ancient Greek technology and Science. The Transition from Mythos to Logos, New Discoveries of Greek Scientific Knowledge - Babylonian mathematics
http://www.tmeg.com/bab_mat/bab_mat.htm
- The Maya Astronomy Page
http://www.michielb.nl/maya/astro.html
