NASA
Nasa: The Da Vinci Glow
In the year 1510, Leonardo Da Vinci had an interesting theory to explain earthshine. While his theory was partially incorrect he was well before his time in establishing certain facts. Learn about Davinci's speculations and the...
Khan Academy
Khan Academy: Codex Leicester: Fossils/mountains, Moon/tides
An excerpt from Leonardo da Vinci's Codex Leicester. Find out how this "Renaissance man" observed the Earth and learned more about tides, moons, and fossils in the mountains.
Fundación Cientec
Modelos Matematicos Del Cosmos De Los Indigenas Mayas Precolombinos
This site explains the Mathematical models used by the Mayan. You can see the traditional designs that Indians were using in their paintings and ceramic in the search for their calendars, their models of the cosmos and their mathematical...