Who is popular today?

The climate wars “don’t finish until clean energy is economically viable,” says The Australian’s Foreign Editor Greg Sheridan.

“And it’s not economically viable at the moment – it’s not technically viable,” he told Sky News host Peta Credlin.

“You can’t base your energy on renewable energy because it’s not available all the time – it’s very expensive.

“People say it’s cheap but it’s only cheap if you don’t have to provide any of the back-up.”