il n’y a pas que les animaux ou la terre que l’on surexploite : les éléments aussi.
Until recently, humanity has treated the Earth as an infinite resource. As the Earth’s population has exploded over the past century however, we’ve learned in many different ways that that’s untrue. This periodic table produced by the American Chemical Society shows that there are also 44 chemical elements that will face supply limitations in the coming decades. Among those under a “serious threat in the next 100 years” are silver, helium, zinc, and gallium.
We humans move to and fro upon the earth, gobbling up everything in sight, and some things aren’t replaceable.
As with many such predictions, the 2017 dates didn’t pan out, but the point that these resources are finite still holds. Eventually, we will run out.
Lo vi en kottke.org http://ift.tt/2B6zbC7