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Humans 'Will Shrink' Due To Climate Change

mammal dwarfism shrink humans climate change hyperthermals

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#1    Still Waters

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Posted 02 November 2013 - 11:24 AM

Humans will shrink significantly because of man-made climate change if patterns from previous global warming events are followed, researchers have said.

A team of scientists from the University of Michigan said mammals decreased in size "substantially" during two ancient global warming events, known as hyperthermals.


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#2    A rather obscure Bassoon

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Posted 02 November 2013 - 02:05 PM

Have not Humans actually got taller ?

#3    Doug1o29



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Posted 02 November 2013 - 02:52 PM

View Postshaddow134, on 02 November 2013 - 02:05 PM, said:

Have not Humans actually got taller ?
Dwarfism (in a species) is believed to be a genetic adaptation to reduced environmental resources.  It happened to the mammoth, red kangaroo and a long list of others.  Modern kangaroos are about two feet shorter than their ancestors of 70,000 years ago.  The last surviving mammoths on Wrangell Island, about 7000 years ago, were about the size of a collie dog.  Several other isolated mammoth populations underwent independent dwarfing episodes, including populations in California's Channel Islands and on Sicily.  It occurred in Australian lizards where the large megalania went extinct, while the smaller monitor survives quite well, thank you.

Trees also have undergone dwarfism in some areas, simply as a result of the large ones being cut for timber.  In Europe there is a measurable genetic change resulting from that.  Investigators have not found such a change in the Americas; evidently, Americans haven't been cutting big trees long enough.  In the red kangaroo, humans are believed to have been the driving force, killing large ones for food.

Also, we have selectively killed off larger species of deer, cattle and others through hunting.  While this is not dwarfism at the species level, it is at the genus level.

There are numerous causes of dwarfism, of which we humans are one.  We might undergo dwarfism if we can't figure out how to feed our populations adequately, but unless something starts selectively hunting us for food, we won't have to worry about that particular mechanism.

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#4    Resh


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Posted 02 November 2013 - 11:34 PM

At least they assume future generations... the way things are going

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#5    Heroic Bishop

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Posted 03 November 2013 - 12:11 PM

Makes a change from them blaming it on smoking for once....

#6    Ashyne


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Posted 03 November 2013 - 02:25 PM

This explains why the Dwarves (who lived deep underground close to the hot core) are so small. Perhaps they were once normal humans (who migrated below and formed the great Dwarven kingdoms of legend) and not a different species after all! They simply shrank due to extreme climate changes!

Edited by Ashiene, 03 November 2013 - 02:27 PM.

#7    Duchess Gummybuns

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Posted 03 November 2013 - 11:50 PM

This sounds like no small problem.

I'll go hide in the corner now.

#8    progressivegamer44


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Posted 04 November 2013 - 12:36 AM

6 foot master race reporting in, I'm tall, but not too tall.  Works for me

#9    ROGER


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Posted 04 November 2013 - 04:38 AM

We call this the " Clothes Dryer "  theory . Humans will shrink like cotton socks.

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#10    AtlantisRises


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Posted 04 November 2013 - 06:25 AM

View Postprogressivegamer44, on 04 November 2013 - 12:36 AM, said:

6 foot master race reporting in, I'm tall, but not too tall. Works for me

I'm ridiculously over tall. But as people shrink I'll be even more tall so I don't mind,

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#11    Lopex


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Posted 04 November 2013 - 09:14 AM

A horse the size of a small dog? THAT WOULD BE AMAZING

#12    spud the mackem

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Posted 04 November 2013 - 10:01 AM

I always get some ruddy Giant in front of me at football matches.
What is the average height of todays Males.
You are the same height as anyone with a gun in your hand as being small makes you less of a target.

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#13    cormac mac airt

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Posted 04 November 2013 - 03:18 PM

I have to wonder how the scientists at the University of Michigan reconcile their claim that mammals were getting smaller due to the two climate change events of 55 and 53 mya respectively, when the oldest primate AFAIK (Archicebus achilles) only dates to c.55 mya and could fit in the palm of ones hand. Also, how did they determine that events from that long ago would impact humans, a genus which didn't even exist prior to c.2.5 mya?



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#14    Merc14


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Posted 06 November 2013 - 03:24 AM

HS stupid theory.  LMAO.

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#15    regeneratia


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Posted 14 November 2013 - 06:18 PM

What climate change? You mean the cooler summers?
Arctic ice melts here and grows there.
The antarctic ice grows there and melts here.
The North pole is roaming far more than ever before.

Edited by regeneratia, 14 November 2013 - 06:21 PM.

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