Barack Obama has called for young people to “stay angry” in the fight against climate change but warned that they “can’t be too pure” for politics.
The ex-US president said “the US is back” under Joe Biden, and scolded China and Russia’s leaders for not physically attending the COP26 summit.
He criticised Donald Trump for “active hostility” towards climate science which he said had slowed progress.
“Time is running out… We are nowhere near where we need to be”, he said.
Speaking at the COP26 climate summit in Glasgow, Mr Obama received rapturous applause when he took to the stage and a standing ovation at the end of his speech – but there was pushback from activists.
He called out nations for failing to meet the pledges they made in the 2015 Paris Agreement when he was in the White House. However, activists were quick to point out the pledges that were broken by his administration, including the failure of developed countries to deliver a promised $100bn a year in climate finance to poorer nations.
The former president insisted that despite political divisions in the US and the country’s absence from global climate efforts for four years during the Trump administration – it was back on track and committed to change.
He dedicated much of his speech to young activists, who he said were “right to be frustrated”.
He honoured the dedication of activists such as Greta Thunberg who are “forming movements across borders”, and urged young people to at least get out and vote for politicians who will stand against climate change.
“Vote like your life depends on it because it does”, he said.
‘You can’t ignore politics
Mr Obama told young people they “can’t ignore politics” and that while protesting raises awareness, they should get involved in politics at some level.
“You don’t have to be happy about it, but you can’t ignore it. You can’t be too pure for [politics].”
Referencing his own daughters’ shopping habits, he also called on young people to support businesses that were committed to sustainability, and boycott those that were not.
Mr Obama’s catchphrase of the night was telling young activists to “stay angry”.
“To all the young people out there – I want you to stay angry. I want you to stay frustrated,” he said.
“But channel that anger. Harness that frustration. Keep pushing harder and harder for more and more. Because that’s what’s required to meet that challenge. Gird yourself for a marathon, not a sprint.”