Analysis of ancient crystals from the Jack Hills in Western Australia revealed evidence of freshwater appearing around 4 billion years ago, challenging the previous belief of a completely ocean-covered Earth. The discovery of light isotopic signatures in zircon crystals suggests hot, fresh water altering rocks deep below the surface. This finding has significant implications for understanding the origins of life, indicating that land masses and freshwater may have created conditions for life to flourish within 600 years of the planet's formation. This research marks a crucial step in unraveling the mysteries of Earth's past and the conditions that supported life's emergence and evolution.

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