“If we keep burning fossil fuels indefinitely, global warming will eventually melt all the ice at the poles and on mountaintops, raising sea level by 216 feet. ” — National Geographic
To be honest, melting all the ice on the earth won’t take much if there was enough carbon in the atmosphere to heat things up, we’ll very likely create an ice-free planet, with an average temperature of perhaps 80 degrees Fahrenheit instead of the current 58.
But National Geographic reported back in 2013, that it would probably take at least 5,000 years to melt the roughly 20.8 million cubic km of ice on Earth.
This Bussiness Insider’s Animated Video shows how the continents would look like If all the Ice melted.
And In 2015, NASA revealed that Earth’s oceans are rising faster than expected, and the space agency projected that we’re now “locked in” to at least 90 cm of sea level rise in the coming decades.
The article in ScienceAlert wrote about it recently saying, “It would be enough to displace millions of people around the world, but if this trend continues and all our polar ice caps and glaciers melt, it’s been predicted that the oceans will rise by a mind-blowing 65.8 meters (216 feet). So where will all that water end up?”
It is true the whole world will never be underwater. But our coastlines would be very different. The continents would be reshaped and major cities would be drowned.