Pythagoras was not simply interested in the number three. He was fascinated by numbers in general. He viewed them as the key to understanding the universe as a whole. His investigation into the nature ...

In the cosmogony of Pherecydes, tutor of Pythagoras, the wedding of Zeus and Hera is a central theme. Credit: Public Domain via wikimedia commons Pherecydes of Syros is one of the most enigmatic ...

These free online tools let you skip the setup and start tracking your money right away. Many, or all, of the products featured on this page are from our advertising partners who compensate us ...

Chemistry, mathematics and physics are central to our understanding of nature. Physics explores the fundamental laws of mechanics, electromagnetism, quantum mechanics and relativity. Chemistry studies ...

Here is a list of our partners and here's how we make money. A budget planner is a tool, such as a worksheet or template, that you can use to design your budget. A successful budget planner helps ...