Stringless Yo-Yo!

How to yo-yo without a string attached… So many crazy tricks and the science that makes it possible.

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Bizarre fourth state of water discovered

We already know that water can have three states of matter: solid, liquid and gas. But scientists at the Oak Ridge National Lab (ORNL) have discovered that when it’s put under extreme pressure in small spaces, the life-giving liquid can exhibit a strange fourth state known as tunnelling.

What is the speed of dark?

Most of us already know that darkness is the absence of light, and that light travels at the fastest speed possible for a physical object. In short, this means that, the moment that light leaves, darkness returns. In this respect, darkness has the same speed as light. However, in some instances, darkness actually moves faster than light.