Scientists now know where each continent was in relation to the Poles at any given time. These developments have come from discoveries in paleomagnetism, oceanography and seismology, and they are affecting every earth science from geochemistry to earthquake engineering.
| Actor | Role |
|---|---|
| EEdward BullardSelf | Self |
| BBarry CoxSelf | Self |
| DDon TarlingSelf | Self |