A Timescale is a scale used to represent periods of time. Option: Have students make a ... Explain that scientists also like to sort events in the order they have happened. Show the geologic timeline.

The evolution of the human mind has allowed us to transcend our modern understandings of time and expand into the realm of ...

According to the International Union of Geological Sciences (IUGS), the professional organization in charge of defining Earth’s time scale, we are officially in the Holocene (“entirely recent ...

In 1913, before he even earned his doctoral degree, he proposed the first geological time scale, based on the fairly recently discovered phenomenon of radioactivity. Using his quantititive time ...

The geologic time scale is divided into eons ... such as the transition from Jurassic to Cretaceous 145.5 million years ago. The largest extinction events define a change in era. The end of the ...