Comprehending the Geologic Timescale
I admit, it is an ambitious task to comprehend just how old the universe is. Imagining what the world was like even 100 years ago is a challenge. Now try to visualize what the Earth looked like circa 300 million years ago. Or maybe even 4 billion years ago. In total, the Earth is a staggering 4.6 billion years old! For example, humans (specifically Homo sapiens), have only existed for around 200,000 years. That’s roughly 0.007% of Earth’s entire history….