The threat of global warming is nothing new, but have you ever wondered what the world look like if all 5 million cubic miles of the ice on our planet melted away?



Seen above is an aerial view of Asia after the sea level has risen 216 feet. Major cities like Karachi, Baghdad, Dubai, Calcutta, Bangkok, Ho Chi Minh City, Singapore, Hong Kong, Shanghai, Tokyo, and Beijing would all be underwater.

Based on current population levels and placement, that would mean more than 760 million people would need to either migrate to higher ground in order to survive or start investing in submarines.
 
For more amazing images, check out National Geographic magazine's interactive "If All The Ice Melted" graphics up on their website.