What Is a Pyramid Scheme? A pyramid scheme is a fraudulent investment where participants make money primarily by recruiting new investors rather than from legitimate businesses.

How the ancient wonder was built is one of Egypt's biggest mysteries. But archaeologists do have insight into who built them—and what they hold inside.

Data are however almost never normally distributed (e.g., Miceri, 1989) and standard statistics then seriously lack of power. In these cases the mean is a poor estimator of the population average and ...

The recent robotic explorations of the 'air-shafts' in the Great Pyramid have demonstrated that there are still many mysteries surrounding the ancient monument. Ian Shaw discusses the debate ...