The Investopedia Simulator is a great way to learn about trading without the risk of losing money.

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

Proteins are the workhorses of cells. Learn how their functions are based on their three-dimensional structures, which emerge from a complex folding process.

To create a restore point on Windows 11, use these steps: Open Start. Search for Create a restore point, and click the top result to open the System Properties page.