Archaeologists working in Peru have discovered 25 well-preserved quipus, an ancient string-based device used to solve mathematical problems and to assist in record-keeping.
Sure, that selfie you just uploaded is perfect in your eyes, but will the internet feel the same way? A new calculator made by researchers at MIT lets you upload your snapshots to calculate the probability that they will go viral.
Chances are, you've used one of the many useful calculating tools available online: How much would a monthly mortgage cost me with today's interest rates? What time is it on another continent? But there are far more exotic and weird calculators on the Internet. Here are ten of the most unusual.
As a finite resource, our time is a precious commodity. But determining the precise value it holds in our lives is not easy. But a new tool can now tell you how much money your time is really worth — and how to spend it more wisely.
With the modern onslaught of newfangled portable computers, the once mighty pocket calculator has fallen to the wayside. Let us remember the calculator's glory days with 128 different brands and 582 individual calculators. [Vintage Technology via Core 77]