To understand evolution, humans must think in much larger units of time ... change isn't apparent in days, months, or years. Instead, it's documented in layers and layers of rock deposited over ...

Evolution is not "going somewhere"; it just describes changes in inherited traits over time. Occasionally, and perhaps inevitably, this change results in increases in biological complexity ...

Evolution is a change in the inherited characteristics of a population over a number of generations, through the process of natural selection, which may result in the formation of new species.

To understand evolution, humans must think in much larger units of time ... change isn't apparent in days, months, or years. Instead, it's documented in layers and layers of rock deposited over ...