Posts Tagged ‘water cycle’

Did you know that even though 71% of Earth’s surface is covered by water (including that frozen in the polar ice caps and buried underneath the Earth’s surface), a mere 3% of it is fresh water, and hence suitable for drinking?

Also, have you ever heard this? The puddle of water you splashed through as a kid, the rain showers that nurture your garden, and the glass of water you fill at your faucet to drink may be the same water that a Tyrannosaurus Rex might have tasted when it was alive.

You don’t think so? Hear me out.

There are several theories (some scientific, some not so much) in existence about how old the water on Earth is really.

  • The amount of water on Earth is limited. Hence, the water that makes up a third of the Earth today had been around when dinosaurs were alive. However, it may not be true that we are drinking the same water, because what they drank, by virtue of constant water cycles, might be at the bottom of an ocean by now or deep underground.


  • Due to water cycle, water molecules evaporate, which means that they are  converted into the individual molecules of oxygen and hydrogen. Hence, when the water molecules reform during condensation, it can be argued that they are not the same water molecules anymore.


  • It may be safe to say that at least some percentage of water molecules that were around when dinosaurs existed could be lingering in the water we see now. (I won’t go to the technical specifics of the proof for this one.)

Which theory do I second? Irrespective of the scientific reasoning behind it, I’d like to believe in either theory #1 or #3.


Because they are so much more fascinating and intriguing, that’s why! They provide such scope for imagination.

Which one would you prefer to believe? Or do you have another theory that you’d like to add to the list above? If so, please share it with us!

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