A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.

Google's latest doodle in India celebrates the quadratic equation, ax² + bx + c = 0, showcasing its real-world applications in physics, engineering, sports, and business. The interactive feature, ...

Learn how to plot a bell curve in Excel with simple step-by-step instructions for accurate data visualization. #ExcelTips #BellCurve #DataVisualization Supreme Court Deals Major Blow to Trump Removal ...

Dana Miranda is a Certified Educator in Personal Finance, creator of the Healthy Rich newsletter and author of You Don't Need a Budget: Stop Worrying about Debt, Spend without Shame, and Manage Money ...

Need to make a last-minute addition to your latest Amazon Prime order? Well, you're in luck because there's a new way to make changes on the Amazon app. The e-commerce giant has launched a new feature ...

Imagine you just made an investment – and it lost value overnight. Most investors feel disappointed when they see red on their performance chart. However, an initial loss in value, seemingly overnight ...

The logistic map looks simple but it reveals how chaos emerges from order. This story shows why one equation changes how we see the world. Suspected Brown University gunman found dead White men feel ...

Here's how to build smarter checklists in Excel using checkboxes, conditional formatting and task dependencies to help with multi-step processes. In my previous article in this series, I walked you ...

Learn how to add, configure and use checkboxes in Excel to create interactive task lists and trigger formatting without relying on macros. Recently, Microsoft has introduced the ability to add ...

Did you know that you can leave notes on specific Excel cells for people to read? It’s a great way to safeguard against data entry mistakes by putting in reminders or instructions. Here’s how to set ...