Volunteer divers guard Oman's 'unique' coral reefs

On a sailing boat anchored off Oman's pristine Daymaniyat Islands, volunteer divers pull on wetsuits, check their scuba tanks and then take turns plunging into the clear turquoise water.

Green spaces can save lives, according to urban big data

Against the backdrop of global climate change, extreme heat events are becoming hotter, longer, and more frequent. Such sustained extreme heat has severely impacted people's health all over the world.

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