copper coins

Discovered ruins of temples and ships containing treasures submerged under the sea
Scientists use modern scanning equipment to find valuable buildings and artifacts in two sunk Egyptian cities.
Effective heat protection for computers in coins
A Japanese guy devised a unique heat dissipation method for laptops with coins.
The discovery may change the history of Australia
The coins were identified dating back to the 900s. Researchers believe they originate from the ancient Kingdom of Kilwa in Africa (today near Tanzania).