Neither Trump nor Turnbull can turn back the tide on renewables

The argument for renewable energy is now a purely economic one - and the move away from coal will only pick up speed

The inauguration of President Trump this Saturday (Australian time) marks a radical change in the world as we know it. It ushers in the beginning of four years where progressive issues as far reaching as race equality, women's health, nuclear and foreign policy, and of course climate change will be under sustained attack.

Less than a year after the world agreed a historic climate pact in Paris, the US - the world's second-largest greenhouse gas polluter - elected a man who wants to revive the glory days of coal, oil and gas.