Many disturbing things could happen after all the glaciers meltdown. First of all, frozen dead bodies will start showing up. Scientists have already been discovering evidence of ancient humans, such as Neanderthals who inhabited these icy regions thousands of years ago. Second, Inuit people will have to relocate, and knowledge of ancient civilizations will be uncovered.
London and Venice will drown along with most of Europe. Other countries, such as Denmark will end up losing most of their land, which would result in millions of families being left without their homes. Earthquakes will abolish towns and cities across the globe, and chaos and civil unrest will ensue.