Whether it is on the shiny new iPad, computer or phone, the chances are that you are reading this article through a screen laced with one of the rarest metals on Earth: indium.

FORBES: What Will Apple Do When Indium Runs Out in 2017?

For metals such as hafnium and indium, recycling is the only way to extend the lifetime of critical sectors of the electronics industry.

FORBES: Recycling Scrap Rare Metals Vital to Future Technologies

Recycling of indium along with other rare metals (3) will also prove pivotal.

FORBES: 14% Efficiency for Thin-Film Solar Cells, but Where Will the Indium Come From?

Secondly, we deliberately mine, or do not mine, certain deposits of those other minerals as a result of the co-production of indium (this same economics is true of all of the minor metals, indeed, the definition often used of minor metal is one that is extracted as a co-product).

FORBES: What Will Apple Do When Indium Runs Out in 2017?

Peak neodymium is the latest threat to green energy, while doubt emerges over the security of many other element groups including the rare earths, the platinum group metals, and elements such as antimony, beryllium, gallium, germanium, graphite, indium, magnesium, niobium, tantalum and tungsten.

FORBES: Endangered Elements Pose Threat To Green Energy