Chemical elements make up the staggering variety of molecules that combine to form DNA, cellular organelles, cells, tissues, and organs in the human body.

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.

Operating profit is the total earnings from a company's core business operations excluding deductions of interest and tax.

Transposable elements, or "jumping genes", were first identified by Barbara McClintock more than 50 years ago. Why are transposons so common in eukaryotes, and exactly what do they do?

Fusion is among the most environmentally friendly sources of energy. There are no CO2 or other harmful atmospheric emissions from the fusion process, which means that fusion does not contribute to ...