Skyscrapers... The pride of the 21st century…

Yet these imposing structure gave rise to a new problem that would stretch the minds of architects and engineers: keeping the outsides of tall buildings clean.

Many companies all over the world conducted research and tried to find a solution to this problem.

Yet the answer finally came not from laboratories and technology, but from somewhere very familiar: from nature.

This is a lotus flower, known as the white lily…

It grows in muddy and dirty environments. Yet its leaves are always clean…

There are specks of dust on the surface of the lotus. Yet the flower gets rid of them in a most interesting manner.

The lotus directs the drops of rain on its leaves towards the dust particles.

The raindrops gather up all the dust. And the leaves are again spotless. The lotus thus always remains clean.

This feature of the lotus is today used in the design of building exteriors.

One company, ISPO, even produced an external cladding material known as Lotusan.

The difference between the two faces can be seen clearly.

That on the right cleanses itself, just like the lotus, with raindrops.

A plant offers a solution to a problem which the finest architects, engineers and material-producing companies were unable to solve.

In order to solve the problem, the plant needs physics, chemistry, molecular biology and industrial design.

Yet it possesses neither eyes, ears nor brain.

The fact that the lotus plant possesses such a system, or that it is able to clean its outside in this way, is proof that God created it.

This is how God reveals that there are proofs in plants in nature for people of understanding:

It is He Who sends down water from the sky. Thus We bring forth plants of every type with it; We produce green vegetation from it. We produce close-growing grain from it and the palm trees laden with clusters of dates close at hand produced from pollen, as well as orchards full of grapes, olives and pomegranates, which are so similar and yet dissimilar. Look at their fruit as He causes it to grow and ripen. In that there are signs for people who believe. (Qur'an, 6: 99)