[When] humans started to settle across Earth, there was a sort of mild ... doing it and it's happening on a massive scale. I don't have to waste time proving when it happened, when it started ...

Geologic Time is a crucial concept to understanding the history of the earth—including the evolution of life. Many different representations of the timeline have been created, and many approaches ...

Prehistoric time line, geologic time scale, photos, facts, maps, and more from National Geographic. Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history.

Carl Sagan told us that there are more stars in the universe than there are grains of sand on all of the Earth's beaches. At the same time ... unimaginably big, the scale of the universe is ...

Over geological time, the gravitational pull of Sun and Moon, growing or shrinking ice sheets and the slow drift of the continents will move mass around and cause Earth's axis to shift, but human ...

The table below sets out the time-scale of some of the major events in Earth history and developments in science and technology. It shows something of the parallel development of human ...

UK scientists used hundreds of tiny fossils that lived in the sea at the time to understand climate shifts tens of millions ...