I have a duty to act on cyberbullying

The Duke of Cambridge has made a speech today at a big conference called the Children's Global Media Summit.

At the conference in Manchester, he spoke of his 'worry' at how technology can affect children and identified online bullying as a big problem.

Together with social media companies, charities, parents and young people, he talked of his plans to make changes and his aim to encourage children to be "smarter, stronger and kinder".

He also the new BBC website called Own It which will let children report bullying regardless of what platform they are on.

Earlier this week, Tony Hall announced the launch of a new BBC webite called Own It.

Own It is for young people aged 9 to 12 years old. It offers them advice on how to handle bullying online.

The organisation aims to make children "smarter, stronger and kinder".