[Havoc]

Can you produce an ice comet large enough to explain the ice without destroying the planet in the impact? The size of mass you're talking about would facilitate not merely an extinction event, it would destroy the planet itself. Such a body (and we are talking about several thousand cubic miles, not a small thing like the ones in "Armageddon".. This is why I'm asking. Distribution of this mass of Ice to the poles would throw the planet off kilter and there's too much to merely be on Peaks of mountains and explain it. Geological maps show river tributaries running deep into the ocean. The ice sheets in Alaska/Canada and northern Russia are around a mile thick or more and both have complete tropical forests beneath them. That means at some point in History, the sea level was at least 1 full mile lower if not more. If it was warm enough for a tropical jungle to exist 1 mile below sea level, we're not talking about something existing during an ice age. So common sense tells us that something else was going on.

Where'd the extra water come from.

[Interesting Times]

The ice sheets in Alaska/Canada and northern Russia are around a mile thick or more and both have complete tropical forests beneath them. That means at some point in History, the sea level was at least 1 full mile lower if not more.

You have committed the logic error known to my people as the "does not follow."

Sea levels at the height of the last ice were about 400 feet lower than now, and some of the ice caps were two miles thick. I don't think a mysterious external source of water is needed to explain what happened.

Also, I haven't seen evidence that the *current* mile-thick ice-sheets are sitting on the remains of tropical forests -- can you point out a source?