Even Harry Potter would be amazed by the latest breakthrough in carbon dioxide removal in which this colourless and odourless gas is turned into stone – as if by magic (well, it needs 2 years) – by mixing it with hydrogen sulphide and water, and injecting it into volcanic basalt. This process was first implemented by the world’s first so-called ‘negative emissions plant’ in Iceland, providing an innovative method of protecting the environment against pollution.