Originally Posted By: Faldage
I'd sure like to know how they got a 500 year cycle out of the chart on question 8. Unless by cycle they mean half cycle.

And you are most right, Faldage, to question a recurring 500 year cycle based on a single cycle of a 1000 year chart.

But you score a niggling point. The point is that for 500 years it was hot, then for 500 years it was cold, and now it is hot again.

And as for me I think that Earth's temperature fluctuates and that cold is worse than hot.