Two years after Fairphone launched its debut gadget, the firm is back with an altogether more interesting follow-up. Fairphone’s first handset was released in 2013, and was intended to be a more equitable device — one which used fairly traded supplies and…

  State-of-the-art atomic force microscopes (AFMs) are designed to capture pictures of structures as small as a fraction of a nano meter — one million times smaller than the width of a human hair. In recent times, AFMs have produced…