Ireland’s Leo Varadkar has announced he is stepping down as prime minister. In a statement delivered this afternoon in Dublin, Mr Varadkar said his reasons for leaving were “both personal and political”. He said he believed a new leader “will be better placed than me” to gain seats for his party Fine Gael in the
Photo: CSIRO Researchers led by Australia’s national science agency had an efficiency breakthrough with roll-to-roll flexible printed perovskite solar cells. The international team, led by the Australian government’s Commonwealth Scientific and Industrial Research Organisation (CSIRO), has developed a new method for producing roll-to-roll flexible printed solar cells that deliver unprecedented levels of efficiency. Printed solar cells are