TechnologyTwisted carbon nanotubes harness waste energy and put it to work The “twistron harvester” generates power at the highest rates for energy harvesting yet, so may finally live up to the technique’s century-long promise News
HealthWhy UK midwives are back-pedalling on natural childbirth For decades, women have been encouraged to give birth naturally – that means avoiding all medicines and interventions. Now the Royal College of Midwives is changing its position Analysis