Few can doubt that global warming continues to have an impact on the world. However, the reality of rising sea levels due to climate change can be a terrifying one. The great and majestic city of Venice is already under water. Can you picture the same scenery for other major cities such as Los Angeles, London, or New York? Here is a look at what can happen in as little as 100 to 1,000 years into the future unless a solution to climate change can be found.