5 Unit Conversion Mistakes That Caused Real Disasters
A misplaced decimal or a mixed-up unit sounds like a minor slip. In these 5 documented cases, it destroyed a spacecraft, nearly crashed a…
How to Convert Work Hours to Decimal for Payroll
You can’t multiply “8 hours 45 minutes” by an hourly rate directly, minutes aren’t base-100, they’re base-60. Here’s exactly how to convert time worked…
What Grade Do I Need on My Final Exam? (Formula + Calculator)
If you know your current course grade and how much your final exam is worth, you can calculate exactly what score you need before…
7 Reasons Compound Interest Is Called the Eighth Wonder
You’ve probably seen the quote: “Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn’t, pays…
8 Interesting Facts About How Age Is Calculated Worldwide
“How old are you” sounds like a simple question, but the answer has depended on where you’re standing for most of human history. Here…
8 Shopping Tricks Retailers Use With Discount Pricing
A lot of what feels like a great deal is engineered behavioral psychology, not luck. Here are 8 real pricing tactics retailers use, backed…
7 Things That Affect Your GPA Besides Grades
Two students can both earn all A’s and B’s and still end up with different GPAs. Here are 7 factors, beyond the letter grades…
9 Early Signs of Pregnancy Before a Missed Period
A missed period is the classic pregnancy signal, but implantation typically happens 6-12 days after conception, well before your period is due, and your…
8 Percentage Tricks That Make Mental Math Easy
You don’t need a calculator for most everyday percentage problems. Here are 8 tricks that make percentage math fast enough to do in your…
9 Factors That Affect Your Daily Calorie Needs
Your daily calorie needs aren’t a fixed number, they shift based on several factors, some obvious, some easy to overlook. Here are 9 of…