Trump Arrives in Germany For G20

The G20 meeting of industrialised nations is about to get underway in Germany. But will trade and climate change disagreements make for a tense meeting of world leaders?

Also in the programme: Europe and Japan unveil spacecraft designed to unlock the secrets of Mercury's magnetic fields; and why are more Africans deciding to holiday in Africa?

Picture: Rubber masks of German Chancellor Angela Merkel, French President Emmanuel Macron, US President Trump and British PM Theresa May, displayed during a protest in Hamburg. Credit: Getty Images.