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Nick Lane

The Vital Question

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  • Vitalyhat Zitat gemachtvor 8 Jahren
    Life arose around half a billion years after the earth’s formation, perhaps 4 billion years ago, but then got stuck at the bacterial level of complexity for more than 2 billion years, half the age of our planet
  • Despandrihat Zitat gemachtletztes Jahr
    Some 350 years after the discovery of cells, we still don’t know why life on earth is the way it is.
  • b5319599606hat Zitat gemachtvor 3 Jahren
    All complex life on earth shares a common ancestor, a cell that arose from simple bacterial progenitors on just one occasion in 4 billion years.
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    On the contrary, a population of morphologically complex eukaryotic cells arose on a single occasion – and all plants, animals, algae and fungi evolved from this founder population. Any common ancestor is by definition a singular entity
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    Over the past two decades, we have learned from their genome sequences and detailed biochemistry that none of the archezoa is a real missing link, which is to say that they are not true evolutionary intermediates. On the contrary, all of them derive from more complex eukaryotes,
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    Over hundreds of millions of years, complexity gradually increased, as cells learned not only to deal with oxygen, but also to profit from its reactivity: they evolved aerobic respiration, giving them far more power.

    Y de eso nacimos nosotros

  • enrique paredeshat Zitat gemachtvor 3 Jahren
    This view implicitly underpins the textbook history of the earth. We tend to think of oxygen as wholesome and good, but in fact from the point of view of primordial biochemistry it is anything but: it is toxic and reactive.
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    Life, as biochemist Albert Szent-Györgyi observed, is nothing but an electron looking for a place to rest.
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    Carbon comes in two stable forms, or isotopes, which have marginally different masses.2 Enzymes (proteins that catalyse reactions in living cells) have a slight preference for the lighter form, carbon-
  • enrique paredeshat Zitat gemachtvor 3 Jahren
    Genomes do not predict the future but recall the past: they reflect the exigencies of history.
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