Guardian: Barack Obama is expecting to discuss climate change at the G20 summit in Brisbane, with the US ambassador to Australia reinforcing the presidents message that it is a critical issue.
In a wide-ranging address to the National Press Club on Wednesday, in which he also spoke about marrying his partner of 17 years thanks to same-sex marriage laws, ambassador John Berry said the US was raising climate change through its sherpas for the November summit.
I think we can't lose sight that this is...