The idea is simple, as polar ice on Greenland and Antarctica melt and drain into the ocean it adds to the total amount of water on the worlds oceans. While this may not seem like a large amount over a short period of time compared to the sum of the oceans volume, however it adds up to a few inches of water over the the course of a longer period of time. While only a couple inches may seem negligible, these few inches, 3.5 globally, can prove to be devistaing to low-lying coastal communities.
While efforts have been made to lessen further impact of fossil fuels such as renewable resources, it is not probable to completely stop the emission of CO2 with current dependence on oil, as such the emission trend will continue along with predicted warming trends as more CO2 and other greenhouse gasses are emitted into the atmosphere. While greenhouse gasses are not the only cause for the warming trend, they are a major factor.
This graph shows projected sea level rise based on predicted warming patterns. Statistics like these certainly should be taken with consideration for the timeframe, however, drastic sea level rise could be the bane of costal communities like the one here in charleston if global warming trends continue in their predicted manner. There certainly is no "silver bullet" for stoping climate change, but moving towards renewable energy could be a valuable step in the right direction.