Thanks to climate change, the ocean is rising at an alarming rate, expanding with the increasing heat and surging with melting ice sheets and glaciers.
While your climate-denying neighbor may be skeptical that this is the reality, scientists have been observing these changes since the late 18th century.
In New Jersey, the difference is already noticeable.
A new video from Vox explores how the New Jersey meadowlands, a small stretch of towns built on marshland just outside of Manhattan, have already started to suffer from rising seas.
"Between 2000 and 2050, we're probably looking at a range here in New Jersey of about 1 to 2 feet of sea level rise," explained a scientist in the video.
This is a serious issue because the region connects Manhattan to many other cities along the east coast. Plus, the area is home to important energy infrastructure, so if this region continues to flood it could cause periodic blackouts for Manhattan.
We don't have a lot of time, either. In just a few decades, scientists predict that coastal cities on the Atlantic could experience high tide flooding up to 3 times a week.
When storms like Hurricane Sandy become more frequent due to climate change, the flooding in this region will only increase in frequency and severity.
If action isn't taken and soon, we might be forced to abandon this stretch of land by the end of the century.