I'm consistently impressed and grateful that we live in times where we have the science to understand these relatively unimportant but very interesting facts ab

I'm consistently impressed and grateful that we live in times where we have the science to understand these relatively unimportant but very interesting facts about the world. "Nearly 50 grains of sand collected from the same watershed, analyzed using the decay of radioactive potassium to argon, yielded about the same age" I'm familiar with the science, and maybe I'm just easily impressed, but this sort of line always lightly blows my mind.