At a press briefing organised by direct action climate campaigners Extinction Rebellion last week, the BBC’s environmental analyst, Roger Harrabin, stated that one of the key demands of the group – a government commitment to zero carbon by 2025 – would simply not happen. He asked whether the group was setting itself up to fail.

In a passionate response which changed minds and hearts in the room, 20 year-old Lizia Woolf asked how she was supposed to react to a question like that. She said “Questions like ‘well, is it possible?’ They’re pointless! This is unimaginable to me, to ask these questions.”

Extinction Rebellion embark on a series of bold protests this week, culminating in a mass act of civil disobedience next weekend. Find out more at www.rebellion.earth