I haven't talked to Roger since they returned from Oregon. If I see him at a meeting tonight I'll report back.

28,000,000 BC : Continued...

A lot happened in the 35 million years after a great bolide slammed into the Gulf of Mexico and extinquished almost half of the world's living species.

Floating on plates the continents continued spreading into a configuration approaching their relative positions of today.
Moving at about six feet a century these dancing plates interrupted the ocean's set currents of heat (from the equator to the poles) so the balmy world slowly became cooler.

Then, three million years ago, the isthmus of Panama moved into its current position and stopped the exchage of waters between the Pacific and Atlantic oceans. This event cooled the Earth and thereby established a cycle of Ice Ages which literally gave birth to all mankind.