The Suan Sri Nakhon Khuen Khan Park in Bangkok's Phra Pradaeng area, which is known as the capital's "green lung", is perhaps the city's biggest green zone – covering 1,440 hectares of undeveloped land. This area will become even greener now that 500 tree saplings were planted by 65 volunteers from FedEx in collaboration with representatives from the Plant a Tree Foundation last month.
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