Closely related to the history of sedimentary rocks are the age of the Earth as an astronomical body and the evolution of the planetary system. We shall see from the discussion of the following ...

Efforts to determine Earth's age have a long history. The ancient Greek philosopher Aristotle believed that time was eternal and, consequently, that Earth was infinitely old. In contrast ...

and its divisions chronicle some definitive events of Earth history. (In the graphic, Ma means "million years ago".) Earth formed around 4.54 billion years ago, approximately one-third the age of the ...

The official history of Earth has a new chapter - and we are in it. Geologists have classified the last 4,200 years as being a distinct age in the story of our planet. They are calling it the ...

Precambrian time covers the vast bulk of the Earth's history, starting with the ... Time The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary ...

The extraction of iron, which led to the Iron Age, is a chemical process which ... out the time-scale of some of the major events in Earth history and developments in science and technology.

The Earth is really, really old. Over 4 1/2 billion years old, in fact. How do we begin to comprehend a number that large? It helps to put it on a more fathomable scale. Watch to see where Earth's ...

Let's take a look at the geological meaning of the word Anthropocene. The history of planet Earth is long: about 4.5 billion years. Scientists divide up this huge history using geological epochs, eons ...

At such a critical moment in US history, we need reporters on the ground ... 4.35 billion years ago in a new “idea paper.” The Earth and its moon are believed to have originated from similar ...

This week, uncover some of the oldest ice on Earth, follow a dinosaur highway, learn how Pluto sealed the capture of its moon ...