Best of First Up for Thursday 4 March

On the pod today: the lockdowns have seen a big reduction in fossil fuel emissions, but can this be sustained when the world opens up again; who should be next in line to get the Covid-19 jab; the Deputy Prime Minister and Sports Minister Grant Roberts on the podtponement of the Women's Rugby World Cup - with the borders closed were we ever in a position to host the event in the first place and National's deputy leader Dr Shane Reti on who should be vaccinated first and the flaws he sees in contact tracing.