PhysicsThe physicist who argues that there are no objective laws of physics Daniele Oriti’s pursuit of a theory of quantum gravity has led him to the startling conclusion that the laws of nature don’t exist independently of us – a perspective shift that could yield fresh breakthroughs Features
ChemistryHow to turn most of the CO2 an astronaut exhales into fresh oxygen A chemical reaction that recycles carbon dioxide into fresh oxygen could provide more sustainable life support for astronauts on the moon or Mars – and as a bonus, it also produces carbon nanotubes News