What I love about science

There's a theory of evolution. And some associated theories about who lived in various places, who they interacted with, when they migrated, and so on. 

And then, we learn something new. And each of these theories is tested and some get updated. Maybe this group migrated from a different place than expected and didn't interact with the other dwellers in the region. 

It's fascinating to learn more and start to understand how the populace lived. 

Plus, we also learn more about the earth itself, and how it has evolved and adapted. 

I'd also like to point out that while there ahas always been some amount of climate change in the millions of years the earth has existed, the current conversation is more focused on man-made climate change. And how these changing climates are impacting our lives - and what we can do to help mitigate it. 

https://www.popularmechanics.com/science/a64383417/saharan-mummies-dna/