EnvironmentHave we found an unlikely solution to the climate impact of flying? Aviation is probably the single hardest industry to decarbonise. Sustainable fuels aren't the answer, but Mike Berners-Lee thinks there is one at hand Comment
SocietyHow a study in the Stockholm subway could help prevent violent crime We need to learn the lessons from an ingenious piece of research done in Sweden and radically change policies around interpersonal violence, says Jens LudwigComment