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Open access to 744,665 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics

Don't waste any more hours in Microsoft Excel doing things manually. There are many ways to use Excel formulas to decrease the amount of time ...

John Lennon giving the autograph, with his future killer Mark Chapman, few hours before death. Destroying the Berlin Wall Osama bin Laden with his family visiting Falun in Sweden in 70′. The Beatles at the beginning of their career. Elvis Presley...

How much of a Math Geek are you?

Davidope is creative director and founder of Volll studio, based in Budapest. Besides that he has a tumblr where he show off some cool stuff he find online and AWESOME animated gifs he make. Black and white ipnotizing machines, optical illusions with...

via b.aking.ca The futility of the entire human condition, summed up in a single photo and caption

Your Guide to the Universe of Physics

The free engineering textbooks in this category are designed to help mechanical engineers to prepare for their exams. Become a master in topics such as computational fluid dynamics, heat transfer, control engineering or automation and robotics engine...

Chand Baori, in the village of Abhaneri near Bandikui, Rajasthan. Stepwells, also called bawdi or baoli are in essence wells in which the water can be reached by descending a set of steps. They may be covered and protected, and are often of architect...

Python Challenge home page, The most entertaining way to explore Python. Every puzzle can be solved by a bit of (python) programming.

An assortment of mathematical marvels.

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Dystopian novels—stories of the horrific future—are so common as to be almost forgettable. Here is a compilation of what I believe are the 16 greatest of

An admiring glance at the Dolphin, a sleek concept car aimed squarely at driving groups of four with low environmental impact and lightness in mind.

Let's say that you need to send your friend a message, but you don't want another person to know what it is. You can use a full-blown encryption tool, such as PGP. If the message isn't that important or if it is intended to be decrypted by hand, yo...