Carbon dioxide: Difference between revisions
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As was evident from the name, '''carbon dioxide''' was a compound of [[carbon]] and [[oxygen]]. It was most often considered in its gaseous state, particularly on the [[planet]] [[Earth]], where it was a vital part, as the [[Second Doctor]] once remarked, of the Earth's "lower [[atmosphere]]". ([[TV]]: ''[[The Ice Warriors]]'') On other planets, it was less important, as was obvious from the [[Sontaran]] attempt to change Earth's atmosphere to something more hospitable to their species. ([[TV]]: ''[[The Sontaran Stratagem]]'') | As was evident from the name, '''carbon dioxide''' (or '''CO₂''') was a compound of [[carbon]] and [[oxygen]]. ([[TV]]: ''[[The Sontaran Stratagem (TV story)|The Sontaran Stratagem]]'') | ||
It was most often considered in its gaseous state, particularly on the [[planet]] [[Earth]], where it was a vital part, as the [[Second Doctor]] once remarked, of the Earth's "lower [[atmosphere]]". ([[TV]]: ''[[The Ice Warriors (TV story)|The Ice Warriors]]'') On other planets, it was less important, as was obvious from the [[Sontaran]] attempt to change Earth's atmosphere to something more hospitable to their species. ([[TV]]: ''[[The Sontaran Stratagem (TV story)|The Sontaran Stratagem]]'') | |||
The [[Dreg]]s required carbon dioxide to [[breathing|breathe]] and exhaled [[oxygen]] as waste. ([[TV]]: ''[[Orphan 55 (TV story)|Orphan 55]]'') | |||
== Importance to Earth == | == Importance to Earth == | ||
Carbon dioxide was particularly important to [[Earth]]'s [[atmosphere]]. According to the [[Second Doctor]], "The carbon dioxide in the Earth's atmosphere help[ed] to retain the [[Sun]]'s heat." The removal of that gas resulted in "a sudden freeze up". Carbon dioxide levels began to drop precipitously around the year 4900. As [[Clent]] made clear, that was when Earth conquered hunger through artificial means. Since it was no longer necessary to grow food, people encroached on farmland all over the world. A dramatic reduction of vegetation ensued, resulting in the elimination of much of the atmosphere's carbon dioxide. What followed was the Second [[Ice Age]] of [[5000]]. ([[TV]]: ''[[The Ice Warriors]]'') | Carbon dioxide was particularly important to [[Earth]]'s [[atmosphere]]. According to the [[Second Doctor]], "The carbon dioxide in the Earth's atmosphere help[ed] to retain the [[Sun]]'s [[heat]]." The removal of that gas resulted in "a sudden freeze up". Carbon dioxide levels began to drop precipitously around the year 4900. As [[Clent]] made clear, that was when Earth conquered hunger through artificial means. Since it was no longer necessary to grow food, people encroached on farmland all over the world. A dramatic reduction of vegetation ensued, resulting in the elimination of much of the atmosphere's carbon dioxide. What followed was the Second [[Ice Age]] of [[5000]]. ([[TV]]: ''[[The Ice Warriors (TV story)|The Ice Warriors]]'') | ||
There was also danger to Earth's atmosphere if the carbon dioxide levels ''rose''. People in the [[20th century|20th]] and [[21st century|21st centuries]] were concerned about this phenomenon, largely brought on by the increased use of [[car]]s. | There was also danger to Earth's atmosphere if the carbon dioxide levels ''rose''. People in the [[20th century|20th]] and [[21st century|21st centuries]] were concerned about this phenomenon, largely brought on by the increased use of [[car]]s. During his [[Exile on Earth]], the [[Third Doctor]] attempted to warn [[UNIT]] of this danger but his warnings largely fell on deaf ears. ([[AUDIO]]: ''[[Terror of the Master (audio story)|Terror of the Master]]'') In [[2009]], the [[ATMOS]] technology was retrofitted into cars worldwide and was thought to be the answer to the atmospheric worry. before the [[Tenth Doctor]] discovered ATMOS to be a ruse which was changing the Earth's atmosphere into one that enabled a [[Sontaran invasion of Earth]]. ([[TV]]: ''[[The Sontaran Stratagem (TV story)|The Sontaran Stratagem]]'' / ''[[The Poison Sky (TV story)|The Poison Sky]]'') | ||
== Elsewhere in the universe == | == Elsewhere in the universe == | ||
Though its terrestrial origin was usually organic life, it was created by other things elsewhere in the [[universe]]. For instance, the mineral [[vionesium]] produced large quantities of carbon dioxide when exposed to oxygen. ([[TV]]: ''[[Terror of the Vervoids]]'') | Though its terrestrial origin was usually organic life, it was created by other things elsewhere in the [[universe]]. For instance, the mineral [[vionesium]] produced large quantities of carbon dioxide when exposed to oxygen. ([[TV]]: ''[[Terror of the Vervoids (TV story)|Terror of the Vervoids]]'') | ||
[[The Scabus]] came from a planet whose atmosphere was once rich in carbon dioxide before a more advanced species colonised the planet and altered the atmosphere to do so, drastically reducing the carbon dioxide present. ([[AUDIO]]: ''[[Terror of the Master (audio story)|Terror of the Master]]'') | |||
[[Category:Gases]] | [[Category:Gases]] | ||
Latest revision as of 00:07, 18 March 2023
As was evident from the name, carbon dioxide (or CO₂) was a compound of carbon and oxygen. (TV: The Sontaran Stratagem)
It was most often considered in its gaseous state, particularly on the planet Earth, where it was a vital part, as the Second Doctor once remarked, of the Earth's "lower atmosphere". (TV: The Ice Warriors) On other planets, it was less important, as was obvious from the Sontaran attempt to change Earth's atmosphere to something more hospitable to their species. (TV: The Sontaran Stratagem)
The Dregs required carbon dioxide to breathe and exhaled oxygen as waste. (TV: Orphan 55)
Importance to Earth[[edit] | [edit source]]
Carbon dioxide was particularly important to Earth's atmosphere. According to the Second Doctor, "The carbon dioxide in the Earth's atmosphere help[ed] to retain the Sun's heat." The removal of that gas resulted in "a sudden freeze up". Carbon dioxide levels began to drop precipitously around the year 4900. As Clent made clear, that was when Earth conquered hunger through artificial means. Since it was no longer necessary to grow food, people encroached on farmland all over the world. A dramatic reduction of vegetation ensued, resulting in the elimination of much of the atmosphere's carbon dioxide. What followed was the Second Ice Age of 5000. (TV: The Ice Warriors)
There was also danger to Earth's atmosphere if the carbon dioxide levels rose. People in the 20th and 21st centuries were concerned about this phenomenon, largely brought on by the increased use of cars. During his Exile on Earth, the Third Doctor attempted to warn UNIT of this danger but his warnings largely fell on deaf ears. (AUDIO: Terror of the Master) In 2009, the ATMOS technology was retrofitted into cars worldwide and was thought to be the answer to the atmospheric worry. before the Tenth Doctor discovered ATMOS to be a ruse which was changing the Earth's atmosphere into one that enabled a Sontaran invasion of Earth. (TV: The Sontaran Stratagem / The Poison Sky)
Elsewhere in the universe[[edit] | [edit source]]
Though its terrestrial origin was usually organic life, it was created by other things elsewhere in the universe. For instance, the mineral vionesium produced large quantities of carbon dioxide when exposed to oxygen. (TV: Terror of the Vervoids)
The Scabus came from a planet whose atmosphere was once rich in carbon dioxide before a more advanced species colonised the planet and altered the atmosphere to do so, drastically reducing the carbon dioxide present. (AUDIO: Terror of the Master)
