Martin Luther University of Halle-Wittenberg

Scientists have come up with an alternative cement recipe that makes use of unused mining materials to cut its carbon emissions by up to two thirds, while meeting the performance requirements of traditional Portland cement.

Ordinarily, if you want to make a 3D-printed liquid-filled object, you have to inject the liquid after the object has been printed. A new process, however, allows such items to be printed in one step – and it could have some valuable applications.