A small action can enact big change
The Principal of Marie Curie primary school in Hà Nội, Nguyễn Xuân Khang, received a letter on July 25 from a 5th-grade student named Nguyễn Nguyệt Linh with a question: "Can our school give up releasing balloons into the sky on its opening day, or limit the number of balloons?"




















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