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Mesmerizing animation shows Earth's tectonic plates moving from 1.8 billion years ago to today
Rodinia, in turn, is formed by the break-up of an even older supercontinent called Nuna about 1.35 billion years ago. Among ...
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60 Hour Days Prevented Only By Billion-Year ‘Pause’ Say Scientists
The length of a day ... Earth rotated at a steady rate for 1.4 billion years, with the resulting length of a day remaining unchanged at 19.5 hours. When the moon first formed 4.5 billion years ago ...
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Complex life on Earth began around 1.5 billion years earlier than previously thought, new study claims
Their study suggests that these observations may point to a two-step evolution of complex life on Earth. Step one followed the first major rise in atmospheric oxygen content 2.1 billion years ago ...