TechnologyHow scientists are cracking historical codes to reveal lost secrets Deciphering encrypted messages from centuries past is a painstaking process. But linguists and computer scientists are starting to automate it, with some sensational results Features
ChemistryWidely used chemicals can now be made without using toxic gas Chemicals containing fluorine that are used in pharmaceuticals, fertilisers and batteries can now be made without the release of toxic hydrogen fluoride gas as part of the process News