Langdon argued that the AAH is one of many hypotheses attempting to explain human evolution through a single causal mechanism, and that the evolutionary fossil record does not support such a proposal.

Review of the individual claims used as evidence for the AAH generally does not support the hypothesis overall, and most of these traits have an explanation within conventional theories of human evolution.

AAH emerged from the observation that some traits that set humans apart from other primates have parallels in aquatic mammals.

Few paleoanthropologists have explicitly evaluated AAH in scientific journals, and those that have reviewed the theory have been critical.

Various traits that have been proposed to indicate past adaptation to aquatic conditions and the return to land, but generally the evidence provided for the AAH is equally well accounted for by land-based adaptations without needing to posit an aquatic phase of human development.

Several theoretical problems have been found with the AAH, and some claims made by the AAH have been challenged as having explanations aside from a period of aquatic adaptation.

Proponents of the AAH have claimed that a number of specific features in hominin evolution suggests that water played a role in natural selection, and that specific traits shared by all humans can therefore be understood as adaptations to an aquatic environment.

In addition, the elongated lower limbs of humans, which is explained by AAH proponents as improving swimming speeds, appears only after the evolution of the genus Homo and biomechanical analysis indicates humans are far too poor swimmers to have derived from an ape ancestor that swam, and pre-human apes would face similar problems.

Others have similarly noted the AAH " is more an exercise in comparative anatomy than a theory supported by data.

Laden also states that the AAH was proposed when knowledge of human evolutionary history was unclear, while more recent research has found that many human traits have emerged at different times over millions of years, rather than simultaneously due to a single evolutionary pressure.

Morgan's critics have claimed that the appeal of AAH can be explained in several ways:

Avalon has a number of organizations and activities, including: the Library, the GSA, AAH ( Art After Hours ), the mentor program ( where older students mentor new students ), a peer mediator program, and Tech Committee.

The AAH has been criticized for containing multiple inconsistencies and lacking evidence from the fossil record to support its claims ( Morgan, for instance, failed to discuss any fossils found after 1960 and much of her analysis is by comparing soft tissues between humans and aquatic species ).

Evolutionary biologist Carsten Niemitz states that he believes the AAH as expressed by Morgan didn't fulfill the criteria of a theory or a hypothesis, merely listing analogies of features of savannah type mammals on the one hand and of aquatic mammals and man on the other, asking the scientific community for explanations other than a common aquatic ancestor of extant man.

Marc Verhaegen has also challenged the AAH as expressed by Morgan.

Morgan has claimed the AAH was rejected for a variety of reasons unrelated to its explanatory power: old academics were protecting their careers, sexism on the part of male researchers, and her status as a non-academic intruding on academic debates.

# The AAH as developed by Morgan has a strong feminist component, which particularly appeals to a specific, feminist audience.

While most proto-human fossil sites are associated with wet conditions upon the death of the hominin, this is not seen as evidence for the AAH since being buried in waterside sediment is one of the rare situations in which fossilization is likely to occur ; paleontologists are aware of this preservation bias and expect fossils to be located near such sediments.

AAH is popular among laypeople and has continued support by a minority of scholars.

Parallels made by proponents of the AAH between humans and the proboscis monkey, which shows mainly behavioral adaptations to a water-based habitat, contradicts any claims of anatomical evidence for the hypothesis.

Many species of modern primates demonstrate some sort of aquatic behaviors ( such as swimming, wading or diving ) and use of aquatic environments ( for thermoregulation, display behavior, range, diet and predation ) but many do not display the traits posited by AAH, suggesting the traits posted as evidence for the AAH may facilitate aquatic behavior rather than evolving as a result of it.

ScienceBlogs author Greg Laden has described the AAH as a " human evolution theory of everything " that attempts to explain all anatomical and physiological features of humans and is correct in some areas only by chance.

The AAH is thought by some anthropologists to be accepted readily by popular audiences, students and non-specialist scholars because of its simplicity.

AAH has not been accepted among the mainstream explanations of human evolution.

It has never been seriously scrutinized and discussed within the field of paleoanthropology and most paleoanthropologists reject the AAH.

White stated that while the theory had the scientific characteristics of explanatory power and public debate, the only reason it has received any actual scholarly attention is due to its public appeal, ultimately concluding the AAH was unscientific.

The AAH has received little serious attention or acceptance from mainstream paleoanthropologists, has been met with significant skepticism and is not considered a strong scientific hypothesis.

Despite modifications to the hypothesis and occasional forays into scientific conferences, the AAH has neither been accepted as a mainstream theory nor managed to venture a genuine challenge to orthodox theories of human evolution.

AAH currently has about 450 beds and provides services in all medical disciplines.

* Aarhus Airport ( AAH ), located 39 km northeast of Århus, serves some 540, 000 passengers a year.

The aquatic ape hypothesis ( AAH ) is a hypothesis about human evolution, which posits that the ancestors of modern humans spent a period of time adapting to life in a wet environment.

In 1987 a symposium was held in Valkenburg, the Netherlands, to debate the pros and cons of AAH.

The context of the initial presentations of AAH ( a popular essay and a political text ) diverted attention away from the possible scientific merits of the hypothesis.

AAH suggests that many features that distinguish humans from their nearest evolutionary relatives emerged because the ancestors of humans underwent a period when they were adapting to an aquatic or semiaquatic way of life, but returned to terrestrial life before having become fully adapted to the aquatic environment.

There is no fossil evidence to support the AAH.

Proponents of AAH argue that bipedalism offers numerous advantages in water, including permitting deeper wading, improved balance and reduced strain on the back, hips and knees as well as improved blood circulation.

Proponents of the AAH suggest that bipedalism is disadvantageous when comparing humans to medium sized, terrestrial quadrupeds, but the fossil record shows that the evolution of humans from ape ancestors didn't include a period of quadrupedal locomotion.

such capacities are impressive evidence pointing to a conception of the human being which does not appear in the accounts of biologists and organic evolutionists ; ;

It does not appear that we will be delivered from our situation by articles on The National Purpose.

What manner of person does Milton appear to have been when as an undergraduate he resided at Christ's College??

If private brand competition hasn't been felt in your product field as yet, have you thought how you will cope with it if and when it does appear??

This iodoprotein does not appear to be the same as what is normally present in the thyroid, and there is no evidence so far that thyroglobulin can be iodinated in vitro by cell-free systems.

It has been shown that thyroglobulin binds thyroxine, but the binding does not appear to be particularly strong.

It does not appear to affect the iodinating mechanism as such.

This was developed into the language " E-Prime " by D. David Bourland, Jr. 15 years after his death ( E-Prime a form of the English language in which the verb " to be " does not appear in any of its forms ; for example, the sentence " the movie was good " could translate into E-Prime as " I liked the movie ", thereby distinguishing opinion from fact ).

He does not appear to have a job, and is described as having private means, although he describes himself as " a traveling salesman in wines and spirits.

This dish usually does not appear on the English-language menu.

The dispute over Tweeddale and Teviotdale does not appear to have damaged relations between Alexander and David, although it was unpopular in some quarters.

The dispute over the eastern marches does not appear to have caused lasting trouble between Alexander and Henry of England.

Due to persecutions, this sect does not appear to have long survived the death of its founder.

The fact that the allomorph does not appear after stem-final, despite the fact that the latter is voiceless, is then explained by the fact that appears in that environment, together with the fact that the environments are ordered.

Likewise, the fact that the allomorph does not appear after stem-final is because the earlier clause for the allomorph takes priority ; and the fact that the allomorph does not appear after stem-final voiceless phonemes is because the preceding clause for the takes priority.

When Ares does appear in myths, he typically faces humiliation.

The base does not appear on public U. S. government maps ; the USGS topographic map for the area only shows the long-disused Groom Mine.

This identification, still found in the 1920 typical edition, does not appear in the 1962 typical edition.

He was deeply affected by the death of Artaban ( 226 ) and the downfall of the Arsacid dynasty, and does not appear to have sought the friendship of Ardeshir, founder of the Sassanian dynasty, although Samuel of Nehardea probably did so.

It is this reluctance which was felt by the Rijksmuseum to reattribute works to other painters ( Abraham van Calraet does not even appear in a Museum catalogue until 1926, and even then he is not given his own entry ) which shows how important it is to art historians that painters are accurately connected to their works — and this is continuously necessary for those of Aelbert Cuyp, as Dordrecht ’ s most famous painter may not in fact be Dordrecht ’ s most famous painter.

Atari's earlier 7800 games listing showed Millipede as one of the games in the line up ; however, it does not appear that it was ever started or worked on.

As she does, the Cookies appear and begin to dance (“ Everybody Says Don't ”).