Geologists have produced a new timeline of Earth's Paleozoic climate ... that opens the door to looking back at this whole other part of Earth's history where there are no fossils, when people ...

It helps to put it on a more fathomable scale. Watch to see where Earth's major events would fall on a timeline stretching across the US. Produced by Alex Kuzoian Follow BI Video: On Facebook More ...

An ambitious effort to understand the Earth ... the new timeline is full of sudden spikes and abrupt shifts. But, in keeping with decades of past research on climate, the chart hews closely ...