we know we can touch rocks that are 1.7 billion years old.

Okay so I understand at a very basic level how radiometric dating works, but I have a question. How do scientists know the half-life of isotopes, when some of them are measured in millions or billions ...

All the Latest Game Footage and Images from Radiometric Dating A visual novel/dating simulator where you can date rocks! You play as a geology student who gets transported to a magical world during ...