Three billion years ago, water was already journeying deep beneath Earth's surface—a discovery that rewrites our understanding of how our young planet worked. Scientists studying ancient rocks have found evidence that water infiltrated the mantle through a process called dripduction, occurring long before modern plate tectonics took over.

This early water-mantle interaction had profound effects: it likely fueled magma formation and volcanic eruptions that shaped Earth's developing continents and internal structure. The findings reveal a far more dynamic early Earth than previously understood, suggesting that water's role in planetary geology goes back much further than we thought. Read the full story →

Today's takeaway: Understanding Earth's ancient water cycle helps us grasp how our planet evolved from a lifeless rock into the dynamic world we inhabit today.