The letter reads:
“The urgent need to cut CO2 emissions to secure the future of our planet is clear, but there are huge implications for our natural resources not only to produce green technologies like electric cars but keep them charged.
“Over the next few decades, global supply of raw materials must drastically change to accommodate not just the UK’s transformation to a low carbon economy, but the whole world’s. Our role as scientists is to provide the evidence for how best to move towards a zero-carbon economy – society needs to understand that there is a raw material cost of going green and that both new research and investment is urgently needed for us to evaluate new ways to source these. This may include potentially considering sources much closer to where the metals are to be used.”