Egypt’s “bent” pyramid built for the Pharaoh Sneferu is a remarkable structure as well as being an archaeological wonder. This bent shape is said to be an example of the architectural ...

For example, in a forest a pyramid of numbers might show a single tree feeding loads of caterpillars, which can feed several blue tits, which can feed a couple of hawks. But this doesn't look like ...

The pyramid contains figures as of 1950 and also provides a forecast for the coming decades. The ‘play’ button shows the development through the years. You can pin an age by clicking on it: for ...

The pyramid contains figures as of 1950 and also provides a forecast for the coming decades. The ‘play’ button shows the development through the years. You can pin an age by clicking on it: for ...