clamshellconundrum
clamshellconundrum t1_j9qz8oe wrote
Reply to comment by GSilky in Homo sapiens may have brought archery to Europe about 54,000 years ago by Yazan_Research
Tooling marks are very obvious from natural rock formations.
clamshellconundrum t1_isnt7hd wrote
Reply to comment by zephinus in Gates Foundation pledges $1.2B to eradicate polio globally by JediMasterBuddha
This is a bought sock puppet account.
clamshellconundrum t1_ja6apou wrote
Reply to comment by certain_people in How is radioactive dating used to determine historical greenhouse gas levels and temperatures? by pog_irl
And those samples are compared to samples of similar age throughout the world to get a clear picture of global atmosphere levels during any one time.