HumansHow to use the dhungar technique to create delicious smoky food Smoke has been used to preserve and flavour food for thousands of years. Try using the dhungar technique with ghee (a kind of clarified butter) to add a finishing touch to dishes like dal makhani, a rich lentil stew, says Sam WongRegulars
PhysicsFirst room-temperature superconductor could spark energy revolution A material that can transmit electrical current with zero resistance at room temperature has finally been created - but it currently requires a pressure close to that at the centre of Earth News