Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas ...

Foods high in vitamin A include organ meats, sweet potatoes, carrots, eggs, fish, and dairy products. You can also find vitamin A in dietary supplements. Vitamin A plays a role in your vision, bone ...

Individual aseismic areas move as rigid plates on the surface of a sphere. Application of the Mercator projection to slip vectors shows that the paving stone theory of world tectonics is correct and ...

The Matrix collection depicts a complex science fiction story incorporating many philosophical elements. Written and directed by the Wachowskis and produced by Joel Silver.

It is often possible to separate the reinforcement from the matrix by physical processes. For example, reinforced concrete can be broken up using machinery. This is one stage in recycling the ...