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The Contender
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Resolved: Human Activity Is a Significant Factor in Global Warming on Planet Earth.

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Voting Style: Open with Elo Restrictions Point System: Select Winner
Started: 9/15/2015 Category: Science
Updated: 2 years ago Status: Post Voting Period
Viewed: 915 times Debate No: 79683
Debate Rounds (5)
Comments (8)
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Well, a troll who is now banned accepted my other debate, so I am doing this again. Thank you to Medv4380 for accepting this debate. However, they have yet to respond and start accepting debate challenges. The voting floor is set at 1500. If accepted without permission, Pro automatically wins the debate.

I will add in definitions to prevent semantics arguments from arising.


Human activity: Activity associated with or caused by humans.

Global Warming: The state of which the Earth's temperature progressively and abnormally rises, which is attributed to the Greenhouse Effect that is caused by increased levels of carbon dioxide, other greenhouse gases, and pollutants in general. REMEMBER, THIS REFERS TO THE WARMING IN THE PAST 115 YEARS.

Planet Earth: The 3rd closest planet from the Sun in the solar system, which is known for being the only known planet that currently sustains life.

Significant: Sufficiently great or important to be worthy of attention as viewed by the judges with statistically large sample sizes

1. Breaking any rules (except for rules related to voting) will result in automatic forfeiture of all seven points to the opponent. If both sides break the rules, votes will be placed as normal. Invalid votes will result in reporting the vote.

2. No semantics.

3. No forfeiture.

4. No Ad Hominem OR mere insults

5. Plagiarism is absolutely prohibited.

6. All arguments must be contained within the character limit. Words or characters on videos, soundtracks or pictures are exempted and do not apply. Sources are also exempted.

7. (Branches off from above rule) Extra arguments in the comments section are forbidden.

8. The debate must be followed under the below structure:
Round 1: Acceptance.
Round 2: Opening arguments and Constructive Case, NO REBUTTALS
Round 3: More arguments, Rebuttals and Strengthening of original case
Round 4: Final arguments, Clarification of case, counter-rebuttals and rebuttals
Round 5: Clarification of case, Counter rebuttals, rebuttals, closing statements, NO NEW ARGUMENTS
9. No trolling or spamming.

10. No cheating (Gish-gallop, asking for votes in your favor, etc.)

11. Accepting without permission is a forfeiture of the debate.

12. Kritiks are not accepted.

As shown, first round is acceptance. I look forward to a fun and intriguing debate!


I accept.
Debate Round No. 1


Thank you, medv4380.

==Contention 1: The correlation between increase in Carbon Dioxide and global temperature==

Throughout the last 650,000 years, there have been seven cycles of glacial advances and retreats, where the carbon dioxide levels abruptly increased, then gradually decreased afterward. However, in 1950, Co2 levels were at a critical level and kept on rising. As of 2014, the global Co2 levels were at an all time high of nearly 400 parts per million [1]:

This graph, based on the comparison of atmospheric samples contained in ice cores and more recent direct measurements, provides evidence that atmospheric CO<sub>2</sub> has increased since the Industrial Revolution. (Source: [[LINK</span><br /><br /><span style=As we can see above, in the last 650,000 years, the Co2 levels have never grown above 300 ppm, as opposed to now, where the Co2 levels are at 400 ppm. Obviously, this abrupt growth in Co2 levels are caused by human activity, such as mass production, the use of electricity, polluting, etc.

I have provided a youtube video above to show the correlation between the high Co2 levels and global temperature [2]. When both are compared, this becomes irrefutable evidence that man-made global warming exists. Note that this is all over the world, so accusations of choosing a specific area for evidence cannot be valid.

In fact, as of 2013, the average global temperature was 14.6 degrees Celsius (58.3 degrees Fahrenheit), which is 0.8 degrees Celsius (1.4 degrees Fahrenheit) warmer than when the year was 1880, and 0.6 degrees Celsius (1.1 degrees Fahrenheit) warmer than the mid-20th century baseline [3][4][5]:

Already, on the first contention, we have seen major evidence affirming the resolution.

==Contention 2: The cause and effect of the Greenhouse Effect and what makes it more powerful==

The greenhouse effect on Planet Earth has been occurring for almost its whole life and is a natural phenomenon, since greenhouse gases such as Co2 have existed on Earth from its birth, thus heating the Earth to help sustain forms of life [6]:

"To its credit, the greenhouse effect has been around long before humans began to burn fossil fuels, and it is a natural phenomenon in that makes life habitable for all living things." [6]

The greenhouse effect operates when the sun's heat passes through Earth's atmosphere, heats the Earth's surface and is reflected back upward. Most of this heat is absorbed by the greenhouse gases like water vapor, Co2 and methane. Afterward, the heat is re-emited in all directions, thus starting the cycle again, continuously heating the Earth. Greenhouse gases literally act like a thermal blanket for Earth [7]:

A layer of greenhouse gases – primarily water vapor, and including much smaller amounts<br>of carbon dioxide, methane and nitrous oxide – act as a thermal blanket for the Earth, absorbing heat and warming the surface to a life-supporting average of 59 degrees Fahrenheit (15 degrees Celsius).

"A layer of greenhouse gases – primarily water vapor, and including much smaller amounts of carbon dioxide, methane and nitrous oxide – act as a thermal blanket for the Earth, absorbing heat and warming the surface to a life-supporting average of 59 degrees Fahrenheit (15 degrees Celsius)." [7]

From this information, we can conclude that the more greenhouse gases are put into the atmosphere, the more heat from the sun is absorbed, thus creating a powerful greenhouse effect. Human actvity is causing this to happen.

P1) The more greenhouse gases there are in the atmosphere, the more powerful the greenhouse effect
P2) Human activity is emitting more greenhouse gases into the atmosphere
C) Human activity is the cause of a more powerful greenhouse effect, and thus man-made global warming exists.

To further prove this point, let us inspect Earth's neighboring planets, Mars and Venus.

Mars' atmosphere is quite thin, and it's nearly completely made up of Co2. However, it is because of the low atmospheric pressure and lack of other greenhouse gases that the greenhouse effect is not at all strong and thus Mars has a frozen surface without any signs of organisms [7].

"Not enough greenhouse effect: The planet Mars has a very thin atmosphere, nearly all carbon dioxide. Because of the low atmospheric pressure, and with little to no methane or water vapor to reinforce the weak greenhouse effect, Mars has a largely frozen surface that shows no evidence of life." [7]

Now, let us inspect Venus.

Despite Venus' atmosphere also being almost entirely carbon dioxide, the amount of Co2 Venus contains is about 300 times as much as Mars' or Earth's. This creates a HUGELY powerful greenhouse effect, causing a temperature so high that lead could not stay solid. [7]

"Too much greenhouse effect: The atmosphere of Venus, like Mars, is nearly all carbon dioxide. But Venus has about 300 times as much carbon dioxide in its atmosphere as Earth and Mars do, producing a runaway greenhouse effect and a surface temperature hot enough to melt lead." [7]

This can be further proven by checking Mercury's temperature compared to Venus' temperature, even though Mercury is closer to the Sun than Venus. [8]

"Venus has a very dense atmosphere made up of carbon dioxide, nitrogen, and sulfuric acid, while Mercury has a very thin atmosphere with various gases, but very little carbon dioxide." [8]

Again this information is major evidence of the existence of man-made global warming.

==Contention 3: Arctic Ice and Sea Levels==

It is widely agreed that melting ice from the Arctic and Antarctic and sea level rise is a sign of increasing temperatures. If I can prove that ice is definitely decreasing and that sea levels are definitely rising, then I win this contention.

Here is a chart showing definite decrease in Arctic ice [9]:

Her is another chart showing rising sea levels [10]:

Image of a graph showing sea level change due to ocean warming

Also, recent reports state that the Arctic is losing ice three times as fast as the Antarctic is gaining ice [11][12].

"Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s. The upward trend in the Antarctic, however, is only about a third of the magnitude of the rapid loss of sea ice in the Arctic Ocean."

Thus, I affirm this contention.


I have put forward major evidence and arguments proving the existence of man-made global warming. I have also put out evidence that the greenhouse effect does indeed exist.

Thus, the resolution is affirmed.



This debate is being canceled. Please redirect all your attention to the original debate that had been hijacked by a Troll, but is freed back up.
Debate Round No. 2


Go to the other debate! :)

Debate Round No. 3




Same, Same.
Debate Round No. 4


Oompa-Loompa doompadee-doo
Debate Round No. 5
8 comments have been posted on this debate. Showing 1 through 8 records.
Posted by BLAHthedebator 2 years ago
Actually, that makes the debate better because it leans farther away from a truism and is more abstract instead of factual.
Posted by MakeSensePeopleDont 2 years ago
As has been admitted on multiple occasions by climatologists, and as is clearly logical; there is NO WAY to argue for or against this stance as there is not enough data, we do NOT know enough about true climate change pattern for our planet throughout time, we humans have NOT been around long enough to give a trustworthy model to work from, and MOST importantly, the data they have present even through to today is an untrustworthy sham; each time climatologists go out and tout their climate change computer models, they end up finding out the framework behind the models are wrong which completely skewed the results. Bottom line is, there is no data for EITHER side to stand on which makes this debate void.
Posted by BLAHthedebator 2 years ago
My last five sources turned into report buttons... You can still access them though.
Posted by BLAHthedebator 2 years ago
I don't remember. But he was here five days before he was removed.
Posted by DATXDUDE 2 years ago
Who was the troll?
Posted by asi14 2 years ago
no kritiks? WHAT?
Posted by BLAHthedebator 2 years ago
Yeah, of course.
Posted by TheDebater_101 2 years ago
Nice, I have a question though, if he declines it, can I do it instead
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