mortar

Surely you will be surprised to know that a member of the snail family possesses the attack at the same speed as a bullet leaving the muzzle, and is also the fastest in the animal

Scientists have discovered the secret behind the durable mortar made from ancient Chinese sticky rice, the material for them to build sustainable buildings ...

The clue from the mortar layer revealed the grave that kept the body of Jesus in the legend dating back to 1,700 years, far beyond previous speculation.

As an indispensable material when building the Great Wall, it can be kept for 30 years ... is the truth that not everyone knows about