The world is undergoing dramatic climate changes. But with development, forests are under threat; and this has a negative impact on the ozone layer.
In Islamabad for example, which has often been called the green capital, decades-old pine trees are being chopped to make way for underpasses and broader roads
Today, as the world observes the United Nations International Day for the Preservation of the Ozone Layer, Dawn News correspondent Danial Kublai Khan meets a group of young tree-huggers.
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