Greta Thunberg prepares to set sail

Greta Thunberg, the 16-year-old climate change activist who has inspired student protests around the world, is heading to the United States from the UK this week, in a sailboat. She will be on a high-tech racing yacht as she travels to UN climate summits next month in New York and in Santiago, Chile, in December. Highlighting the urgency of cutting carbon emissions, the young Swede last month announced she would no longer fly to environmental conferences.

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