I like to use a meter stick and be very intentional with my spacing to model time as a scale. I also avoid using the far right ... of the Earth that is characteristic of a particular span of geologic ...

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.

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 ...

Want more health and science stories in your inbox ... the 'Anthropocene epoch' was not formally defined in the Geologic Time Scale. 'The Anthropocene' remains just the same as it was before ...

Based on the perspective of lunar dynamic evolution, Chinese researchers creatively established an updated lunar geological time scale ... scientific research, science education, as well as ...