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Researchers say a surgery that let pigs with completely severed spinal cords walk again may lead to human trials, and then perhaps even full head or brain transplants. Columnist Helen Thomson is intrigued but sceptical of whether the technique can be successful in humans

People in Caracas and coastal towns describe powerful quakes that collapsed buildings and killed at least 164As a double whammy of powerful earthquakes rattled Venezuela’s northern coast on Wednesday, residents of the capital, Caracas, scrambled out on to the streets from shudder