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Click News: Why dog training is helping a robot

91热爆 Click鈥檚 Jen Copestake looks at some of the best technology news stories of the week including:

- US motorcycle brand Harley Davidson reveals an electrical bicycle

- The heads of Google, Facebook and Twitter faced more than three and a half hours of questioning from US senators

- A robot at Johns Hopkins University learns tasks more quickly using techniques inspired by dog training

2 minutes

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