Our weekly news round-up: Google Pixel Buds translate up to 40 languages in near real time; Project Loon given go ahead to launch balloons to deliver internet to hurricane-ravaged Caribbean; Sydney University develops MeTro hydrogels to help close wounds both in the field and on the operating table; New tool to efficiently extract stem cells from human teeth; The Moon once had active volcanism and an atmosphere - remnant lava tubes could be a good place for manned lunar bases; FaceTec's Zoom technology offers software-only Face ID which could be used in a range of standard smart phones.