"What I want from people is to realize that we have to do something for the world".
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"I think if you want to speak with me personally, maybe you can do it later", Thunberg said before the crowd erupted, chanting her first name.More news: Nunes demands Schiff testify in private as part of House impeachment inquiry
Executive director Paul Scott said he believed Cobre was the ideal choice to create the first of what the organisation hopes will be a series of works honouring climate change activists.
The 16-year-old, who has been travelling around North America to raise awareness about climate change, was imploring fellow youth leaders to speak out in the fight against global warming when she paused as someone near the stage tried to speak over her.
"I usually don't paint political stuff, because it kind of gives you people who will love it and people who will hate it", Cobre tells TIME.
"It is we young people who are the future".More news: Labour pledge 'irreversible shift in power in favour of working people'
She said while teens can't vote and are not the ones who make the decisions that can help the planet, young people can pressure those in power, can hold adults accountable, and can spread their message to other people in the hopes of growing the movement.
Thunberg, meanwhile, is in the US this week, traveling through the south, and saying she's trying to get to Madrid for the United Nations Climate Change Conference next month.
The activist is now in North Carolina on the US East Coast, and recently put out a request for help to get her back across the Atlantic to Europe, after next month's UN Climate Summit was shifted from Chile to Spain. "There is not enough time to wait for us to grow up and become the ones in charge because we need to tackle the climate and ecological emergency right now". "Change is coming whether you like it or not".
Last week, she said she would refuse to meet President Donald Trump, who mocked her in a tweet after her impassioned United Nations speech.More news: 'Seinfeld' actor Charles Levin's body found 'partially eaten by vultures'
"How can you have a child like this talking to the adult world of governments about what they need to do?"