Ice Age
The Beginning of Infinity
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In the early 1900s a Serbian scientist named Milutin Milanković studied the Earth’s position relative to other planets and came up with the theory of ice ages that we now know is accurate: The gravitational pull of the sun and moon gently affect the Earth’s motion and tilt toward the sun. During parts of this cycle—which can last tens of thousands
... See moreMorgan Housel • The Psychology of Money: Timeless lessons on wealth, greed, and happiness
but the truth is that earth’s climate never rests. It is in constant flux. Every event in history occurred against the background of some climate change. In particular, our planet has experienced numerous cycles of cooling and warming. During the last million years, there has been an ice age on average every 100,000 years. The last one ran from abo
... See moreYuval Noah Harari • Sapiens: A Brief History of Humankind
Humans lack these restrictions because (1) our lungs do not compress when we stride (we’re bipedal) so (2) our breathing rates can vary independent of our speed, and (3) our thermoregulation is managed by our fancy sweating system, so the need to pant does not constrain our breathing. Because of this, within our range of aerobic running speeds (not
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