G20 Leaders Meet in Argentina

The build-up to this year's G20 summit of the world's leading industrialised nations has been clouded by tensions over trade, climate change and the conflict in Ukraine.

Also in the programme: seven men found guilty of the murder of an environmental activist in Honduras; The Australian kids skipping class to send a message about climate change.

(Picture: People gathering in Buenos Aires amid G20 summit. Credit: Reuters)