.http://wiki.keithl.com/StevenAustad
== Steven Austad Books ==
 .https://en.wikipedia.org/wiki/Steven_N._Austad
 .https://www.uab.edu/cas/biology/people/faculty/steven-n-austad
 .https://www.stevenaustad.com/
 .The University of Alabama at Birmingham
 . College of Arts and Sciences, Department of Biology
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== Methuselah's Zoo ==
=== what nature can teach us about living longer, healthier lives ===
 . 2022 Beaverton Lib 571.879 AUS 


 .p111 "Biology is complicated.  If it were simple, it would be physics" 
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 . '''How many atoms in human body?'''
  . Total Earth biomass 550 GT carbon 5.5 x 1e2 x 1e9 x 1e6 (tonnes per gram) = 5.5e17 grams
  . carbon is 12 amu and 12% of the atoms in human body
  . Avogadro's number 6e23, hence one gram of human carbon is 5e22 atoms
  . Associated with (100/12)*5e22 ≈ 4e21 total atoms per gram of human carbon
  . Fermi estimate: Total Earth biomass 5.5e17 * 4e21 atoms = 2e39 biomass atoms ''if humans representative'' 
  . There are 1e22 to 1e24 stars in the universe
  . Thousands of asteroids and trillions of comets and icy bodies orbit the Sun
  . Perhaps 3e12 comets per star times 1e24 stars is 6e36 icy bodies in the universe, not counting unbound bodies
  . that's a LOT of physics
  . Both biology and physics are complicated ... or simple, if one is a simpleton
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== To Err Is Human, To Admit It Is Not and Other Essays ==
 . 2022

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== Real People Don't Own Monkeys ==
 . 2022
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== Why We Age: What Science Is Discovering about the Body's Journey Through Life ==
 . 1999 Why We Age: What Science Is Discovering about the Body's Journey Through Life----