A feature of COP26 has been the number of smaller countries, often those with the lowest carbon footprint, highlighting the impact of climate change on their very existence.
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Bernard Ewekia, 25, is the only youth delegate to make it to COP26 from Tuvalu, a tiny island nation in the Pacific Ocean midway between Hawaii and Australia.
Tuvalu is still in lockdown but Bernard says he fought his way here, with the help of an Australian plane, to tell the world: "We in Tuvalu exist."
"Every day we see climate change," he tells BBC Minute. "Whenever high tides come it fills up our lands.
"We love to play in the airfield every evening and when high tides come, we have no option but to play in places filled with sea water. It looks amazing and pretty, but we are drowning.’