Robotic fish to scare invasive species and other news

BBC Click's Lara Lewington looks at some of the week's best technology stories including:

  • An ex-Google engineer, who worked with the US military programme Project Maven, calls for ban on "killer robots" in war zones

  • An algorithm designed to spot bullying on Twitter has a 90% accuracy rate say researchers

  • A robotic fish has been designed to frighten the invasive Mosquitofish and reduce their ability to reproduce

See more at Click's website and @BBCClick