Uh, no, the ice does not melt and take up less volume. The fact that it's floating means that the entire volume of water is already in the ocean. Every last iceberg could melt and the ocean wouldn't rise an inch.
Global warming is real. If it weren't, we'd still be marching around Europe from the last ice age fighting sabertooth tigers and hunting mammoth. That's obvious proof. Greenhouse gas? Probably not. But natural, yes.
The problem isn't melting ice *caps* it's melting ice *sheets* of Antarctica and Greenland. Unlike the ice *caps* their water is not "already" in the oceans, so adding their meltwater would raise sea level.
Rising sea levels would inundate coastal areas, and considering that 75% of the world population lives within 50 miles of the coast, and 10% live 33 feet or lower in elevation near the coast. Theoretically, if *all* the ice sheets melted (which would never happen), sea levels would rise by about 250 feet. Obviously a problem for New York, and parts of Los Angeles, San Francisco, San Diego, Miami... these are just American cities.
· 9 years ago