Summary:
- Geologists have found evidence of a proto-supercontinent that existed over 2 billion years ago, called Nuna. This supercontinent was formed by the collision of several smaller landmasses.
- The evidence for Nuna comes from studying the magnetic properties of ancient rocks, which can reveal the movements and positions of the Earth's continents over time.
- The formation and breakup of supercontinents like Nuna have had a significant impact on the Earth's climate, atmosphere, and the evolution of life over geological timescales.