072. e-waste excavation: mining gold from old phones (ks3)
Uncover the hidden treasures inside old smartphones and learn how extracting gold and metals from e-waste reduces the need for destructive mining.
Did you know there is real gold hidden inside your old smartphone? Devices are packed with precious metals that can be reused. Today, we are going on an e-waste excavation. We will look inside old electronics to see what valuable materials they hold and learn why "urban mining" is much better for the Earth than digging new holes in the ground.
Last modified: March 26th, 2026
