Scientists have shared new details about a mysterious 'underground city' sitting beneath Egypt's Khafre Pyramid.

So why couldn't we transform it into a five-level pyramid -- seriously, an actual pyramid, like a replica of the Luxor casino in Las Vegas -- where elected players are assigned to different levels?

However, while forex itself is legitimate, many scams disguise themselves as forex investment opportunities, often using multi-level marketing (MLM) or pyramid-style recruitment schemes.

A pyramid of numbers approximately shows the numerical proportion of different organisms at each level of the chain.By contrast, a pyramid of biomass shows the collective mass of organisms at each ...