The event was attended by representatives of more than 50 countries, the White House said.

Concerns were raised by a subcommittee including potential price rises and the future of cinemas.

Alasdair Keane climbs aboard an electric boat in Norway.

The smart glasses market is growing, with more choice of wearable devices.

Adrienne Murray visits the Esrange Spaceport in the far north of Sweden.

We are living through a self-driving vehicle transformation.