It is scientific fact that climate change exists, and that it is caused by humans. However, there is also a lot of doubt surrounding it, since the climate also changes naturally a lot. A lot of people doubt the cause of climate change, since a lot of influential people, particularly politicians and political candidates, and famous people, deny the source of climate change, and it often appears in the media. Honestly, it's not that surprising that people get confused.

The main sources of climate change vary by region, but globally they are electrical production and burning of fossil fuels. According to the National Center For Science Education: Since 1880, the average global temperature has increased 1.5°F (0.83°C) That may not seem like a lot, but it really is. The average global temperature change should definitely stay way below a full degree, but some people still deny that this is caused by humans. Well, here’s a fact: since 1880 our society has become much more industrial, and because of that, we burn more fossil fuels, which release greenhouse gasses, which insula te the atmosphere. That by itself is not much of a problem, but because of that insulation, a lot of heat that is reflected by the oceans and the surface of the earth get trapped by this extra layer of insulation, which acts as a blanket, keeping the atmosphere warmer, which also changes the near-surface of surface temperatures.

I agree. Humans are burning more and more fossil fuels as well as other gases which are then released into the atmosphere. After they are released, they aren't able to leave which causes Earth to progressively get hotter. This is often known as the greenhouse effect and it is greatly affecting our planet. Because of this global warming, Earth's glaciers are melting, animals are dying, and whole ecosystems are being affected by this climate change. We need to start taking action in saving our planet and limit the amount of gases we release in the atmosphere. If we don't, the problems caused will be universal and ongoing. Stopping the issue now will greatly benefit future generations.

I agree 100%. Human activities are polluting the Earth. The burning of fossil fuels emits greenhouse gases, which are trapped in our atmosphere. These gases, like carbon dioxide and methane, heat up Earth constantly. Over the last few years, our planet has been increasing in temperature rapidly. In 2012, the EPA said the United States gave off a total of 6,526 million metric tons of carbon gases. All this carbon will remain stuck in the atmosphere for thousands of years. However, methane only remains for 10 years. These emissions come from agriculture, electrical production, and burning of fossil fuels. These are all human activities. We are damaging our planet just to harvest more resources from it. http://www.livescience.com/37821-greenhouse-gases.html

I definitely agree that humans play a big role in climate change but I don't think that it is 100% our fault. Climate change is natural and has been happening throughout history. For example, climate change has been naturally caused by volcanic activity, solar output, and the earth's orbit around the sun (www.climatechange.gc.ca). I think that our actions are making climate change a bigger problem, but I don't agree that we are the sole reason it exists.

I do agree with @Bella I, that climate change is not 100% our fault but I feel we are progressing the speed of climate change. Unfortunately we do have people in office who don't believe that climate change is real and it is up to us to help the
Earth and reduce the speed of Climate Change. So far research shows that the surface temperature has risen 2.0 degrees Fahrenheit since the 19th century. Climate change will result in more droughts, temperatures rising, sea levels rising and much more. Hopefully little things we do can help the Earth because I know that from now on I will think about about some of the choices I make when it comes to reducing Climate Change.

https://climate.nasa.gov/effects/

This is an exerpt from a research paper I composed a few months ago that may elaborate on this. It is validly sourced.

Climate change may be influenced in many ways, & it can either be a slow, gradual process or an abrupt, catastrophic event that impacts the planet forever. However, today’s climate change isn’t being pushed by force of nature, but by the hand of humans. Despite the misleading bias proving that climate change is nonexistent (this is to be discussed later in this project), there are numerous causes that are encouraging today’s rapid change in climate, better known as global warming. First of all, is mother nature the cause to blame, or are humans the driving force in recent climate change? Short answer is, with courtesy to the US Environmental protection Agency, “Human activities have been the dominant cause of that [global] warming… Since the Industrial Revolution began around 1750, human activities have contributed substantially to climate change by adding CO2 and other heat-trapping gases to the atmosphere. Burning fossil fuels and biomass contribute t o emissions of these substances”. As humans have strived to make their lives better and easier, by using fossil fuels to power their homes, it has not been until fairly recently that scientists have finally realized that these harmful pollutants are the key factor of a https://www.epa.gov/sites/production/fi … -large.jpg  warming Earth. In addition, the EPA brings forward a notice explaining that “Particles and aerosols in the atmosphere can also affect climate.” These dirty air toxins that get released into the atmosphere as a result of energy waste do not only trap the sun’s heat and therefore warm the planet, but they also pollute the air & create dangerous storms such as acid rain. In fact, in 2016, Beijing, China called a red alert to all citizens to stay inside their homes, because the air quality was so poor to the point of extreme unhealthiness. Beijing’s residents were recommended to wait until the next day to leave their homes, when the smog had settled down a bit (NPR). Furthermore, the EPA makes another claim that it is not just the expelling of chemical wastes that causes climate change, but that “Human changes in land use and land cover have changed Earth’s reflectivity. Processes such as deforestation, reforestation, desertification, and urbanization often contribute to changes in climate in the places they occur.” Human civilizations & the use of resources have shaped the world in such a way that the climate in many urbanized areas has been noticeably more abnormal. In the end, it seems evident that humans are undoubtedly a HUGE driving force in influencing climate change. Because people are transforming the planet to improve quality of life, the cost/benefit analysis of the results of human civilization is rather asymmetrical. Earth today has taken a serious blow because of humankind’s recklessness in keeping an intact ecosystem on Earth.Perhaps the most frustrating aspect of climate change refers to those individuals who believe that it is “A hoax” (Donald Trump). “Climate change is now more polarizing in the US than abortion or gay marriage” (Dana Nuccitelli). Today, although the very high majority of people know that human-driven global warming is real & poses a threat to Earth, there are still some who, for various reasons, refuse to submit to the reality of climate change. So, who are those persons that defy this global issue, what are their reasons (or bias) that support their denial, or even, what is it that is making them want to steer people wrong on the issue of global warming? Dana Nuccitelli, a climate scientist, stated that “A 2013 study found that conservative media consumers are more likely to distrust scientific experts and reject climate science realities. A new report by Media Matters on climate coverage in major American newspaper opinion pages found pervasive misinformation in the Wall Street Journal.” Today, most of the climatal bias found is in social media, & particularly, powerful conservative companies who want to steer people wrong on the event of climate change. Also, in politics, there is one major party that is renowned for their rejection of climate change. “Climate denial has become the norm among [most] Republican policymakers, as they’ve grown increasingly anti-environment.” This is so easily proved by just simply listening to Republican speeches & debates, as most Republicans are just not climate-friendly. They discredit climate scientists, refuse most clean energy bills, and simply reject the fact that the Earth is getting warmer! But why? What is it that keeps people who deject climate change from believing that it is real? Nuccitelli states in his article “Today’s Republican Party is essentially controlled by the fossil fuel industry. As the study notes:
       ‘We and others have argued that the conservative movement, fearful of the regulatory implications of climate change, and seeking to defend the current economic system built on fossil fuel use, has been the driving force behind organized climate change denial.’”
In the end, if broken down, this does make sense. This is an unfortunate fact, & not many people know about it because, if everyone knew, then there would be an increased dislike of climate deniers, including but not limiting down to conservatives and Republicans. The fossil fuel industry is an extremely profitable source of money, as it produces massive amounts of energy for cheap. However, these energy producers also expel billions of tons of toxic waste into the atmosphere, which is obviously the cause behind global warming. This is where climate science and climate denial clash. The wealthy, powerful people who own these industries are rather concerned and afraid that if current actions were to be taken to combat climate change, one of the first moves would be to cut down on the sources, or causes, of CO2 which is driving the pace of global warming, such as fossil-fuel burners. The pouring of money would be halted toward these factories and people, and their power would diminish. That is why climate deniers detest the reality of global warming, and as a result try to convince the public by means of social media that it is all a hoax, because their greed for money blinds them from seeing the actual benefits of fighting a warming Earth. Therefore, the reason climate change is not believed by everyone is because the stubbornness of fossil-fuel supporters has put a bad influence on media consumers. Bias on global warming is simply untrue, and misleading, because those select individuals who oppose climate change either have a lack of knowledge on the subject or they fear the outcomes of switching to alternative energy sources as a result of climate action.