Scientists may have found a key to understanding how life on Earth evolved from simple to complex. A new study suggests that the physical properties of cold water during Snowball Earth, a period when the planet was almost entirely covered in ice, could have played a crucial role in the development of multicellular life. The research proposes that the high viscosity of cold water would have forced early organisms to adapt and develop collective behavior. While some experts find this idea novel and intriguing, others are more skeptical about its significance.

Source: https://www.wired.com/story/the-physics-of-cold-water-may-have-jump-started-complex-life/