Video from the conference seemingly shows the US President shut his eyes, before opening them numerous times throughout the conference.
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President Joe Biden 'falls asleep' at COP26
It appears Joe Biden got a bit of shut eye during the 2021 United Nations Climate Change Conference, however some people have rushed to his defence.
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Inside the summit, commentators noted the lack of applause after Australian Prime Minister Scott Morrison spoke before the assembled leaders.
To help understand what COP26 is and why it's important, Yahoo News Australia spoke with science guru Dr Karl Kruszelnicki.
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