Metals have been the most important resources in human history, so much so that periods of human history have been named after them. Weapons and armor are all made of different alloys. Now, warfare does not envelop the entirety of the globe. In fact, a huge portion of the planet is at peace, where metals such gold and lithium, not iron and lead, are the everyday elements of choice. The internet revolutionized communication, access to knowledge, and recreation. So much so that to not have it constantly would be almost unthinkable for some people. As such, most people have smart phones, both of which use the aforementioned lithium and gold, the former in its batteries and the latter in its operating systems.
Recycling is when something is reused. When a thing is used, most people generally throw it away. But just because something is not intended for a certain use does not mean it cannot be repurposed. Or, it can be refurbished a little bit and the reused for its original purpose.
Now, it is important to recycle because there is no telling how much the world has left in resources. Food can be cultivated and grown and water naturally replenishes itself. But other resources like metals are going to keep dwindling, even if new reserves were somehow found.
Almost everything is recyclable. The thing about minerals is that they melts. Recycling it can be as easy as melting it down and repurposing it for another task.
Recycled steel is still steel. In the hands of a competent blacksmith, there is no difference between salvaged metal and non salvaged metal. The same things that can be done with steel and iron and all that can still be done.
There is a whole industry dedicated to salvaging material. Some people sell scrap metal, which can fetch quite a pretty penny. Other simply repurpose what they already have to save a pretty penny.
Being reliant on mining is a risky proposition. Mines can dry up without warning. Salvaging metal means being less reliant on a mine. Not to mention the act of mining in and of itself can be dangerous to miners and may be bad for the environment.
Bronze, iron, and steel were the materials of choice in the old world. Gold is the material of choice for pretty much all eternity. Lithium is the material of the future. As the world moves forward into the future, its assets need to be safeguarded.
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