You get smart. Then you get uncomfortably smart. That rare, off-the-charts, stop-everyone-in-their-tracks type of ...

Many of us like to think that we’re fairly smart. But it can be a very humbling experience when you’re in the presence of ...

Excel's query tool reshapes messy imports into 1NF, so AVERAGEIFS replaces hacks and your summaries run faster.

Build a fast Excel money tracker with SUMIFS totals, color coding, and charts, so you see monthly savings and trends without manual work.

Claire Boyte-White is the lead writer for NapkinFinance.com, co-author of I Am Net Worthy, and an Investopedia contributor. Claire's expertise lies in corporate finance & accounting, mutual funds, ...

Background Foodborne diseases are an important cause of global morbidity and mortality, particularly among children who often ...

Acid rain is any form of precipitation that contains high levels of nitric and sulfuric acids. First coined by Scottish chemist Robert Angus Smith in 1852, acid rain can also occur in the form of snow ...

Mary Hall is a editor for Investopedia's Advisor Insights, in addition to being the editor of several books and doctoral papers. Mary received her bachelor's in English from Kent State University with ...