Nasa astronauts speak out amid claims they are 'stuck in space'
Their return has been delayed repeatedly after the Boeing Starliner suffered multiple helium leaks and thruster issues
Is plant-based fish and cell-based chicken the future of food?
Abu Dhabi competition seeking to address global food security will soon select winner
Dementia-detecting cameras support ageing populations
Japan leads the way as technology plays a key role in an ageing world
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