The flash flood destroyed many buildings and left villages covered in mud and debris.Credit: Arun Sankar/AFP via Getty The high-altitude collapse of rock and ice that triggered a catastrophic flash flood near the Nepal–Tibet border on 26 August has so far claimed more than 1,000 lives. More than 4,000 people remain missing. Manoochehr Shirzaei, a
A microscope image of a mitochondrion, artificially coloured in green and red. The organelles were extracted for a retinal transplant from the person’s own leg muscles. Credit: K. R. Porter/SPL Scientists have extracted mitochondria from a woman’s leg muscles and injected them into the vitreous fluid of her eyes in an attempt to treat severe
