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Earth is 4.5G years old, and the earliest undisputed microbial life fossils are 3.5G years old, so that gives 1000 million years. But we can also say that Eart
by sampo 10y ago
Earth is 4.5G years old, and the earliest undisputed microbial life fossils are 3.5G years old, so that gives 1000 million years.
But we can also say that Earth was cool enough for liquid water 4.4G years ago, and there are some findings suggesting microbial life already 4.1G years ago. So only 300 million years, at maximum.
- dgudkov 10y agoMoore's Law applied to DNA complexity hints that life could be way older than Earth itself: https://www.technologyreview.com/s/513781/moores-law-and-the-origin-of-life/ https://www.technologyreview.com/s/513781/moores-law-and-the...
- acqq 10y agoI suspect something's not right, on their graph, mammals are on the top, but this flower has 50 times bigger genome than a human: https://en.wikipedia.org/wiki/Paris_japonica https://en.wikipedia.org/wiki/Paris_japonica
- infinite8s 10y agoPlants often have much larger genomes than animals due to whole chromosome replications. Since they are much simpler phenotypically this isn't nearly fatal.