Your Drink Is Older Than Humanity
The water you drink today is the same water that existed billions of years ago. Earth does not create new water, so we are constantly recycling the exact same molecules used by ancient dinosaurs.
Because the total amount of water on our planet remains constant, every drop has traveled through countless cycles over eons. It evaporates from oceans, falls as rain, and flows through living organisms before starting the process all over again. You are literally consuming water that once flowed through a prehistoric swamp or fell as rain on a Roman city. This closed loop ensures that the ancient moisture of our planet is always in circulation.
Source: Water cycle