It has been said that the possibility of suicide makes all humans existentialists .< ref >

The possibility of linking humans with earlier apes by descent only became clear after 1859 with the publication of Charles Darwin's On the Origin of Species.

Modern humans are known to have overlapped with Neanderthals in Europe for more than 10, 000 years, and the discovery raises the possibility that Neanderthals, modern humans and the Denisova hominin may have co-existed.

Current research has established that humans are genetically highly homogenous ; that is, the DNA of individuals is more alike than usual for most species, which may have resulted from their relatively recent evolution or the possibility of a population bottleneck resulting from cataclysmic natural events such as the Toba catastrophe.

Although the possibility of cloning humans had been the subject of speculation for much of the twentieth century, scientists and policy makers began to take the prospect seriously in the 1960s.

Interest in Mars has been stimulated by the planet's dramatic red color, by early scientific speculations that its surface conditions might be capable of supporting life, and by the possibility that Mars could be colonized by humans in the future.

That raises the possibility that humans were established on the southern part of the Arabian Peninsula beginning as far back as 100, 000 years ago or more.

Mayerson considers the possibility of Eldritch being what humans have always thought of as a god, but inimical, or perhaps merely an inferior aspect of a bigger and better sort of god.

" What is important is not so much whether Deckard is a replicant or not, but that very possibility and uncertainty further blurs the line between humans and replicants.

Although the possibility exists that significant biological effects on humans may be identified in the future, currently most doctors feel that based on available information the benefits to patients outweigh the risks.

In the years 1770 till 1790 at least six people who had contact with a cow had tested independently the possibility of using the cowpox vaccine as an immunization for smallpox in humans for the first time ; among them the English farmer Benjamin Jesty, in Dorset, in 1774 and the German teacher Peter Plett in 1791.

Another possibility is that Toumaï is related to both humans and chimpanzees, but is the ancestor of neither.

* While a growing number of humans believe that their computers and the simulated personalities they interact with are intelligent to the point of human-level consciousness, experts dismiss the possibility that any could pass the Turing Test.

Modern philosophy has generally denied the possibility of knowledge independent of the senses, and Immanuel Kant gave this point of view its classical version, saying that the noumenal world may exist, but it is completely unknowable to humans.

In fact, based on this very assumption, a philosophical article has explored recently the possibility of humans ' willing extinction as a gesture toward other beings.

Wilson uses the term in the same sense when he suggests that biophilia describes " the connections that human beings subconsciously seek with the rest of life .” He proposed the possibility that the deep affiliations humans have with nature are rooted in our biology.

Initial testing in humans is frequently limited to those either already facing death, or who have exhausted every other treatment possibility.

Although there have been reports in the popular press of humans being affected by CWD, a study by the CDC suggests that " ore epidemiologic and laboratory studies are needed to monitor the possibility of such transmissions.

While humans are situated along coastlines, there will always be the possibility of human-induced disturbances despite the number of restoration efforts we plan to implement.

* 1975: Graham Cairns-Smith ( a biochemist who suggested that the ancestors of humans might have had alien biochemistries and presented some evidence to support this possibility in a biological research journal )

Indeed, the possibility remains that humans have failed to adequately bear witness and / or report witnessed fulfillment of her prophecy.

Additional work is required to support or refute this possibility as very few sequences have been isolated from species other than humans and suids.

Psychologists and primatologists have shown that apes and humans constantly monitor the environment for information that may signal the possibility of physical danger or threat to the individual ’ s social position.

The Cabinet had to vote to prevent it ; Queen Victoria reputedly was so incensed by the possibility of her Foreign Secretary supporting an outspoken republican that she asked the Prime Minister, Lord John Russell for Palmerston's resignation, but Russell claimed that such a dismissal would be drastically unpopular at that time and over that issue.

The warm climate and the possibility of occasional work serving the tourist industry has increased the city's population drastically.

Cold fronts in winter have the possibility of drastically reducing temperatures in the area, and are responsible for the little rainfall of such period.

The Ducks track and field brass was only lukewarm at best to the possibility of Johnson participating in track and field while at the University of Oregon, but that quickly changed halfway into his senior track campaign as his times drastically improved from the year before.

Early in the war, the enlistment periods were short, as the Continental Congress feared the possibility of the Continental Army evolving into a permanent army.

To outlaw its use would be to stop grammar from evolving and, by the same token, to exclude all possibility of expressing abstract thought.

One important finding is the possibility that chromosomes are evolving from plasmids in many of these bacteria.

* Commentators such as Hans Moravec argue that humanity will eventually be supplanted and replaced by artificial intelligence or other forms of artificial life ; others such as Kevin Warwick point to the possibility of humans evolving by linking with technology ; while others have argued that humanity will inevitably experience a technological singularity, and furthermore that this outcome is desirable ( see singularitarianism ).

While most investigations of extraterrestrial life start with the assumption that advanced life-forms must have similar requirements for life as on Earth, the hypothesis of other types of biochemistry suggests the possibility of lifeforms evolving around a different metabolic mechanism.

The future of broadband Wireless Internet will be decided towards two possible directions – one possibility would be the takeover of the Cellular companies ' third generation and fourth generation systems and the second possibility would be the other communication companies with their WiMax technologies.

The Humber Bridge Bill would have made amendments to the Humber Bridge Act 1959 " requiring the secretary of state to give directions to members of the Humber Bridge Board regarding healthcare and to review the possibility of facilitating journeys across the Humber Bridge in relation to healthcare ".

Walt Disney's 1953 version Peter Pan presents this possibility, adding " star " to Peter's directions: " second star to the right, and straight on till morning " and from afar, these stars depict Neverland in the distance.

This leaves us with one possibility, the four fermionic directions transform as a Majorana spinor θ < sub > α </ sub >.

The authors discussed the possibility that the Universe has dimensions, but ordinary particles are confined in a potential well which is narrow along spatial directions and flat along three others, and proposed a particular five-dimensional model.

Its bridge was the only possibility to cross the river Inn for 30 km in both directions.

Without the possibility of studying anatomy or drawing from life ( it was considered unacceptable for a lady to view nudes ), she could not undertake the complex multi-figure compositions required for large-scale religious or history paintings.

A user might rightly conclude that the mere possibility of being irrevocably cut-off from access to his or her own information, or to years ' worth of expensive work-products, with no opportunity for recovery of that information, is unacceptable.

The proposed route of the pipeline crossed the eastern part of the Nebraska Sandhills ; opponents of the project argued that this route posed an unacceptable risk to the Ogallala Aquifer, owing to the possibility of contamination from oil spills.

To human beings, Vonnegut says, ignoring a war is unacceptable when we have free will ; however, he does not explicitly state that we actually have free will, leaving open the possibility that he is satirizing the concept of free will as a product of human irrationality.

The accumulation of surplus by one person reduces possibility of satisfaction of the needs of another person, and is therefore unacceptable.