National Security Council spokesman John Kirby has reassured Japanese allies that the president's remarks were only about conveying the US as "a nation of immigrants". 

Multiple Australian companies are pioneering the country's electric aviation industry. So how are green planes powered, how safe are they, and what will it cost?

Pressure to secure reliable drinking water for South Australia's Eyre Peninsula is mounting as the region's main water source is quickly depleting. But a prominent aquaculture business says the only solution puts its multimillion dollar company at risk.