New evidence found in the Rocky Mountains of Colorado supports the notion that Snowball Earth was indeed a global phenomenon.

Sample locations and inferred geological map of the ... a "scar" in Earth's crust, formed when Zealandia broke off from Antarctica and Australia about 150 million years ago becoming its own ...

And now, scientists hypothesize that Earth may have sported its own ring some 466 million years ago. During the Ordovician Period, a time of significant ... establish how long the ring persisted ...

or the deforestation of the Amazon over time. The company says it is the biggest update to Google Earth in four years. Google Earth uses similar technology to the widely used Maps product ...