Soaring fertiliser prices force farmers to rethink Research into replacements for nitrogen-based fertilisers has been spurred by high prices and climate concerns. Source
The 22-year-old 3D-printing schools Maggie Grout has started an NGO that will 3D-print schools where access to education is not guaranteed. Source
How graphene and algae could help build space habitats Scientists are researching how people might construct homes to live on other planets. Source