Attention Deficit Disorder Prosthetic Memory Program

Snowball Earth

ADDPMP501
Snowball Earth - © Attention Deficit Disorder Prosthetic Memory Program

The Snowball Earth hypothesis proposes that during one or more of Earth’s icehouse climates, Earth’s surface became entirely or nearly entirely frozen, sometime earlier than 650 Mya (million years ago) during the Cryogenian period. Proponents of the hypothesis argue that it best explains sedimentary deposits generally regarded as of glacial origin at tropical palaeolatitudes and other enigmatic features in the geological record. Opponents of the hypothesis contest the implications of the geological evidence for global glaciation and the geophysical feasibility of an ice- or slush-covered ocean and emphasize the difficulty of escaping an all-frozen condition. A number of unanswered questions remain, including whether the Earth was a full snowball, or a “slushball” with a thin equatorial band of open (or seasonally open) water.

The snowball-Earth episodes are proposed to have occurred before the sudden radiation of multicellular bioforms known as the Cambrian explosion. The most recent snowball episode may have triggered the evolution of multicellularity. Another, much earlier and longer snowball episode, the Huronian glaciation, which would have occurred 2400 to 2100 Mya, may have been triggered by the first appearance of oxygen in the atmosphere, the “Great Oxygenation Event”.

Arpabong - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP200
Arpabong
Dreamachine - © Attention Deficit Disorder Prosthetic Memory Program
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Dreamachine
Air-Gap Flash - © Attention Deficit Disorder Prosthetic Memory Program
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Air-Gap Flash
Eye Tracking - © Attention Deficit Disorder Prosthetic Memory Program
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Eye Tracking
Smuggling Schemes - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP308
Smuggling Schemes
Microsoft Paint Fan Art - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP287
Microsoft Paint Fan Art
Bizarre Stock Photos - © Attention Deficit Disorder Prosthetic Memory Program
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Bizarre Stock Photos
Cortical Homunculus - © Attention Deficit Disorder Prosthetic Memory Program
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Cortical Homunculus
Vernacular Architecture - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP400
Vernacular Architecture
Impossible Color - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP459
Impossible Color
O.J. Simpson Bronco Chase - © Attention Deficit Disorder Prosthetic Memory Program
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O.J. Simpson Bronco Chase
Stubble Burning - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP462
Stubble Burning

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