Slight misstatement above. The ice cube displaces its own weight, not volume. The volume of ice is slightly—very slightly—larger than its equivalent weight as water, but nowhere near enough to account for the scam that Rush Limbaugh was trying to peddle.

20,000 years ago, when the last ice age was still on, the sea level was 160 feet lower than it is now. That's what created all the "land bridges" that allowed for migrations, such as the influx of peoples who became the Native Americans. These land bridges have since disappeared, but there is still sufficient ice to raise the sea level enough to inundate a substantial amount of dry land. Things have been relatively stable since the end of the last ice age, but suddenly the ice is melting again. The primary precipitating factor is the man-cause increase in greenhouse gasses.

Don Firth