WWF: A top NGO official warned that a number of major cities, including Karachi and Singapore, and the island nation of the Maldives could face inundation in the near future if radical measures are not adopted to curb carbon emissions. “The sea level has increased by a metre…and it can further increase if solid and steps are not taken quickly to address the issue,” said Babar Khan, the regional head of World Wide Fund for Nature (WWF) while briefing journalists here on the topic ‘Regional Climate Risk…