
'Morphing' wheel from South Korea may transform lives - and robots
Voice of America
A Korea Institute of Machinery and Materials researcher controls a wheelchair with stiffness-variable "morphing" wheels in Daejeon, South Korea, Nov. 5, 2024. The "morphing" wheel can roll over obstacles up to 1.3 times the height of its radius. Inspired by the surface tension of water droplets, it goes from solid to fluid when it encounters impediments.
Imagine a wheelchair equipped with wheels flexible enough to navigate all manner of obstacles from curbs to humps and even staircases.
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An advertisement for "RedNote," a Chinese social media app, is seen as people walk by the Nasdaq headquarters in Times Square, Jan. 27, 2025 in New York City. People walk past advertising for Chinese social networking and e-commerce app Xiaohongshu, also known as RedNote, at a shopping center in Beijing, Jan. 15, 2025. A social media influencer films a video for his new Xiaohongshu, also known as RedNote, after leaving TikTok, in Times Square in New York City, Jan. 16, 2025.
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A view of part of the wall of the Roman London Basilica, which has been recently unearthed by a redevelopment of a building in London, is seen in this photo provided by the Museum of London Archaeology taken in summer 2024. A drawing of a representation of the Roman London Basilica, which has been recently unearthed by a redevelopment of a building in London, is seen in this photo provided by Peter Marsden. A view of part of the wall of the Roman London Basilica, which has been recently unearthed by a redevelopment of a building in London, is seen in this photo provided by the Museum of London Archaeology taken in summer 2024.
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FILE - A Mexican long-nosed bat (Leptonycteris nivalis) hangs from agave flowers in Nuevo Leon, Mexico, in July 2022. (Chris Galloway/Horizonline Pictures/Bat Conservation International via AP) FILE - A Mexican long-nosed bat (Leptonycteris nivalis) feeds on agave nectar in Nuevo Leon, Mexico, in July 2022. (Chris Galloway/Horizonline Pictures/Bat Conservation International via AP)