The Eiffel Tower is constructed entirely out of pipe cleaners and drinking straws [Both] Actually, that is entirely believable.

Plankton are the most promiscuous life from on the planet.

There is more water underneath the Sahara desert than there would be in a lake of the same size.

Jupiter's density is so low that its total mass is less than all the sand in the Sahara put together.

The real reason people born just after WWII are called baby boomers is due to their poor diet, consequent on food rationing, which cause them to be quite outrageously flatulent.