Suspected Chinese 'spy balloon' shot down by US fighter jet over sea
6 February 2023
A Chinese balloon that was travelling over the US, including over military sites, was shot down by a fighter jet on 4 February
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Diving drone can switch between flying and swimming
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A drone that can fly like a standard quadcopter but also operate underwater could be developed as a tool for engineers and search and rescue teams
Sperm-sorting device aims to find healthy samples to boost IVF success
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Google AI generates musical backing tracks to accompany singers
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