[outofsalt]

The Glaciers covered New York, Chicago and Seattle with a mile and a half of ice as recently as 11,000 years ago and also formed the great lakes. Geologists claim they have come and gone many times previously. What caused them to retreat (and advance) then?

[rktman]

I DEMAND to know who melted or is responsible for melting the ice that created Yosemite. Someone needs to held accountable.

:>}

[gr8eman]

Earth’s orbital anomalies, silly!