Nature has provided us with the beauty of flowers, so that, in our moments of reflection, we feel elated with the thought that life is precious and that, in spite of tension and stress, we could turn to one of Nature’s wonders for inspiration and relaxation.

Fingerprints are unique. Not a single person on earth has the same fingerprint as you, even your identical twin. Fingerprints are very useful. They can help to identify people, help catch criminals and gives you a better grip on smooth things.

Gunpowder originated in China and had many useful purposes.

What the Chinese have invented and what they discovered in the past.