TechnologyCrawling robots will survey ageing US nuclear missile silos Decades-old US silos holding Minuteman III missiles that have been a key nuclear deterrent since the 1970s will be assessed by robots that can crawl straight up walls ¿ìè¶ÌÊÓÆµ
TechnologyHovering robots could get more lift by 'treading water' in the air Moving like an insect may not be the most efficient way for tiny flying robots to hover – they get more lift by taking advantage of vortices of air that form under their wings ¿ìè¶ÌÊÓÆµ