Although this technique is simple and satisfactory, one practical difficulty does exist: the direction of true north must be known for each launch point.

Although democracy predated Athenian imperialism by over thirty years, they are sometimes associated with each other.

" Although heterogeneous, the major CAM systems have many common characteristics, including a focus on individualizing treatments, treating the whole person, promoting self-care and self-healing, and recognizing the spiritual nature of each individual.

Although most cultural systems of astrology share common roots in ancient philosophies that influenced each other, many have unique methodologies which differ from those developed in the West.

Although variations of the blood supply to the adrenal glands ( and indeed the kidneys themselves ) are common, there are usually three arteries that supply each adrenal gland:

Although it has been known for a while that the Black Sea and the Sea of Marmara flow into each other in an example of a density flow, findings of a study by the University of Leeds in August 2010 reveal that there is in fact an underwater channel of high density water flowing across the floor of the Bosphorus ( caused by the difference in density of the two seas ), which would be the sixth largest river on Earth if it were to be on land.

Although each variant of bridge has its own particular scheme for awarding and accumulating points, all are based upon whether or not the contract for each deal was made or defeated and by how many tricks.

Although Baltimore had the best overall record in the AL East in 1981, they finished second in each half.

Although each country has made its own adaptations and changes to the format, the contestants are confined to a specially designed house where their every action is recorded by cameras and microphones at all times and they are not permitted to make any contact with the outside world.

Although there are many people who identify as being into BDSM who don't share the experience with anyone besides play-or sexual partners, " BDSM " is also used to denote a subculture of people interested in BDSM who may socialize together, educate each other, and throw " play parties " at which BDSM activities are welcome.

Although the referendum approved the CAFTA, each new law had to be analyzed and approved individually ; this has caused delays in Costa Rica's compliance to CAFTA.

Although dream sleep and non-dream sleep appear very similar to an outside observer, each is associated with a distinct pattern of brain activity, metabolic activity, and eye movement ; each is also associated with a distinct pattern of experience and cognition.

Although the Bogotá junta called itself a " Supreme Junta of the New Kingdom of Granada ," it failed to provide political unity, and battles broke out between cities and towns as each tried to defend its sovereignty.

Although all of these behaviors merge into each other seamlessly in various bonding situations so that there is no clear line to be drawn between them, nevertheless behaviors of atoms become so qualitatively different as the character of the bond changes quantitatively, that it remains useful and customary to differentiate between the bonds that cause these different properties of condensed matter.

Although Young threw over 400 innings in each of his first four full seasons, he did not lead his league until 1902.

Although the approximately 2, 000 queries received each week are screened by the Car Talk staff, the questions are unknown to the Magliozzis in advance as " that would entail researching the right answer, which is what?

Although Darwin discussed evolutionary ideas with him from 1842, Lyell continued to reject evolution in each of the first nine editions of the Principles.

Although the court at Celliwig is the most prominent in remaining early Welsh manuscripts, the various versions of the Welsh Triads agree in giving Arthur multiple courts, one in each of the areas inhabited by the Britons: Cornwall, Wales and the Old North.

Although each individual repeating unit is very small, DNA polymers can be very large molecules containing millions of nucleotides.

Although a lens can precisely focus at only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions.

Although the Legacy DOM implementations were largely compatible since JScript was based on JavaScript, the DHTML DOM extensions were developed in parallel by each browser maker and remained incompatible.

-- Although there was some variation in results which must be attributed either to trace impurities or to variation in wall effects, the photochemical exchange in the gas phase was sufficiently reproducible so that it seemed meaningful to compare the reaction rates in different series of reaction tubes for the purpose of obtaining information on the effect of chlorine concentration and of carbon tetrachloride concentration on the reaction rate.

Although it is the third element in the transuranic series, it was discovered fourth, after the heavier curium.

Although Buzzcut's first name was never given in the series, it was revealed in This Book Sucks.

Although he initially declined the part of Dr. David Banner in The Incredible Hulk because of its comic book origins, on reading Kenneth Johnson's script for the pilot episode, he was persuaded to change his mind ( and agreed to remain involved with the series for as long as Johnson was to be involved ).

Although most users did not purchase the registered version, over one million copies have been sold, and the popularity helped the sales of later games in the Doom series that were not released as shareware.

Although the majority of WADs contain one or several custom levels mostly in the style of the original game, others implement new monsters and other resources, and heavily alter the gameplay ; several popular movies, television series, other video games and other brands from popular culture have been turned into Doom WADs by fans ( without authorization ), including Aliens, Star Wars, The X-Files, The Simpsons, South Park, Sailor Moon, Dragon Ball Z, Red Faction, The Thing, Pokémon and Batman.

Although individual projects typically last three to five years, major technological challenges may be addressed over longer time periods, ensuring patient investment on a series of focused steps and keeping teams together for ongoing collaboration.

Although not exclusively about hypertext, the World Wide Web series of conferences, organized by IW3C2, include many papers of interest.

Although Infocom started out with Zork, and although the Zork world was the centerpiece of their product line throughout the Zork and Enchanter series, the company quickly branched out into a wide variety of story lines: fantasy, science-fiction, mystery, horror, historical adventure, children's stories, and others that defied categories.

Although today Sophus Lie is rightfully recognized as the creator of the theory of continuous groups, a major stride in the development of their structure theory, which was to have a profound influence on subsequent development of mathematics, was made by Wilhelm Killing, who in 1888 published the first paper in a series entitled

Although the first books contained a fair amount of violence, it decreased with the series ; in The Emerald City of Oz, Ozma objected to doing violence even to the Nomes who threaten Oz with invasion.

Although most of the gameplay reflects a distinctly fantasy genre, the overarching plot of the series has something of a science fiction background.

Although the Vikings have dominated the overall series, the Saints have won the last three including the 2009 NFC Championship Game.

Although none of the major opera houses "... use traditional, Broadway-style sound reinforcement, in which most if not all singers are equipped with radio microphones mixed to a series of unsightly loudspeakers scattered throughout the theatre ", many use a sound reinforcement system for acoustic enhancement, and for subtle boosting of offstage voices, child singers, onstage dialogue, and sound effects ( e. g., church bells in Tosca or thunder effects in Wagnerian operas ).

Although Falk appeared in numerous other television roles in the 1960s and 1970s, he is best known as the star of the TV series Columbo, " everyone's favorite rumpled television detective ", writes historian David Fantle.

Although the series was originally titled Hero's Quest, Sierra failed to trademark the name.

Although these agreements changed during the 1980s and beyond, it is still expensive to repeat archive television series on British terrestrial television, as new contracts have to be drawn up and payments made to the artists concerned.

Although this television series had the title of Star Trek, it later acquired the retronym of Star Trek: The Original Series ( Star Trek: TOS or TOS ) to distinguish the show within the media franchise that it began.

Although the series used more composers than any other Star Trek series ( Dennis McCarthy, Jay Chattaway, David Bell, Paul Baillargeon, Velton Ray Bunch, Brian Tyler, Mark McKenzie, John Frizzell and Kevin Kiner ), only McCarthy's score for the pilot has been released.

Although the character of Torres was twenty-five years old when the series began, Dawson was actually thirty-six.

Although television science fiction has always frequently addressed moral and social themes, recent series have done so with less subtlety and with more blatantly political themes.

Although the series continued to receive low ratings and was canceled a year later, the enduring popularity of the series resulted in Paramount creating a set of movies, and then a new series Star Trek: The Next Generation, which by the early 1990s had become one of the most popular dramas on American television.