Many Factors Combine to Allow Life on Earth

As we look at planet Earth and the factors that enabled us to be here, we quickly realize that our planet is very special. Here’s a short list: the long-term existence of a protective and oxygen-rich atmosphere; Earth’s axial tilt, stabilized by a single large moon; the ozone layer and the magnetic field, which jointly protect surface creatures from lethal cosmic radiation; plate tectonics, which regulates the levels of carbon dioxide and keeps the global temperature stable; the fact that our sun is a smallish, fairly stable star not too prone to releasing huge plasma burps. Consequently, it’s rather naïve to expect life—at the complexity level that exists here—to be ubiquitous across the universe.


Marcelo Gleiser's argument that the many favorable factors that produce life on Earth mean life could be very rare in the Universe.

Folksonomies: science life chance probability

/technology and computing (0.268208)
/science/social science/history (0.220893)
/science/ecology/pollution (0.166612)

Earth Marcelo Gleiser (0.992640 (positive:0.782684)), huge plasma burps (0.916622 (neutral:0.000000)), lethal cosmic radiation (0.904021 (neutral:0.000000)), fairly stable star (0.901889 (neutral:0.000000)), global temperature stable (0.891913 (positive:0.244638)), single large moon (0.864639 (positive:0.333554)), favorable factors (0.764595 (positive:0.782684)), axial tilt (0.670348 (neutral:0.000000)), mean life (0.663904 (positive:0.782684)), Allow Life (0.656055 (positive:0.782684)), plate tectonics (0.638670 (neutral:0.000000)), ozone layer (0.638587 (neutral:0.000000)), long-term existence (0.633697 (positive:0.246237)), carbon dioxide (0.624500 (positive:0.244638)), oxygen-rich atmosphere (0.621238 (positive:0.246237)), complexity level (0.614779 (neutral:0.000000)), surface creatures (0.613788 (neutral:0.000000)), short list (0.612120 (negative:-0.413848)), planet Earth (0.607758 (positive:0.396430)), magnetic field (0.605702 (neutral:0.000000)), universe (0.392931 (positive:0.782684)), argument (0.381945 (positive:0.782684)), levels (0.349630 (positive:0.244638))

Marcelo Gleiser:Person (0.983335 (positive:0.782684)), carbon dioxide:FieldTerminology (0.859515 (positive:0.244638))

Earth (0.968594): dbpedia | freebase
Sun (0.840397): dbpedia | freebase | opencyc
Oxygen (0.710562): dbpedia | freebase | opencyc
Atmosphere (0.599443): dbpedia | freebase | opencyc
Planet (0.548012): dbpedia | freebase | opencyc
Ozone (0.439559): dbpedia | freebase | opencyc
Plasma (0.402953): dbpedia | freebase | opencyc | yago
Jupiter (0.400053): dbpedia | freebase | opencyc | yago

 This Will Make You Smarter
Books, Brochures, and Chapters>Book:  Brockman , John (2012-02-14), This Will Make You Smarter, HarperCollins, Retrieved on 2013-12-19
  • Source Material []
  • Folksonomies: science


    03 JUN 2013

     The Delicate Balance of Nature

    Memes about how if things were just a little different in the universe, we would not exist.
    Folksonomies: nature laws universe
    Folksonomies: nature laws universe