Climate change refers to the variations in weather patterns broughtabout by the destructive human activities. Greenhouse gases are theprimary cause of climate change. Experts consider carbon dioxide asthe major greenhouse gas. If excess carbon dioxide is released intothe atmosphere through human activities, it accumulates and depletesan important layer called ozone layer. According to scientists, ozonelayer acts as a filter of sun damaging radiations, reflecting themback (Pearce, David, Edward and Markandya 234). However, theaccumulation of greenhouse gases forms a blanket over the ozonelayer, depleting the layer and trapping heat within the earth’satmosphere. Initially, some people dismissed fears of climate changejust as a hoax. However, all leaders of the world now agree on theneed to cut carbon emissions to the atmosphere and adopt moresustainable means of production. The paper will give reasons whyefforts should be taken to stop climate change.
Developedcountries are the major contributors to the global warming. Countriessuch as China, India among others use coal as a major source ofenergy. Typically, coal is considered a ‘dirty’ power source. Themain reason why coal is a dirty energy is the amount of carbondioxide it emits to the atmosphere. The other main contributors tothe greenhouse gases according to experts are fossils fuels. Examplesof fossils include coal, oil, and gas (Pearce, David, Edward andMarkandya 234). Natural gas is used for cooking, heating,electricity for many other purposes. However, the gas produces asignificant amount of carbon dioxide in the atmosphere. Physicistsobserve that the earth surface absorbs heat from the sun throughradiation. Once the heat is absorbed, it is emitted back to theatmosphere through convection. Convection is simply the transfer ofheat through liquid or air. Hot air will rise while the cold airdescends. Scientists observe that the high levels of carbon dioxideproduced by human activities form a blanket over the atmospheretrapping the heat to the ground. The result is increased temperatureson the earth’s surface (biosphere), a condition called globalwarming. The same phenomenon is observed in the greenhouses.
Global warming is a major theme when looking at climate change. Therise in the earth’s temperature has negative impacts on the plantsand animals. Water is crucial for the survival of life on the planet.However, global warming leads to water scarcity especially freshdrinking water. According to scientists, most of the earth`s freshwater is held in the polar ice and snow frosts. As the temperaturesrise, the polar ice is melting in effect reducing the world store forfresh water (Pearce, David, Edward and Markandya 236). Apparently, continued global warming may result in the inadequatewater supply to the world`s population. Another significant impactbrought about climate change is severe weather patterns. For example,tsunamis and tornadoes have become harder to predict and morecatastrophic when they strike. Equally, droughts and famine haveincreased and become rampant and adverse. Countries feeling thegreatest hit from climate change are in Africa and Asia. The twocontinents also have the least developed countries in the world.Notably, the countries are the least contributors to the climatechange. The question then is why these countries should suffer fromthe greed of the industrialized nations? Mitigating the effects ofthe climate change should not only look at reducing the emissions ofgreenhouse gases but also on how to help the developing countries inAfrica and Asia develops. For example, reports from the media showpeople from countries such Somalia and South Sudan dying because ofhunger. The primary cause of the famine and drought in these areascan be traced back to the climate change. However, these countries donot have heavy industries comparable to China or the United States,but they are the ones paying the price of the climate change (Pearce,David, Edward and Markandya 237).  For the purpose of justice,developed countries have to take steps in aiding the developingcountries adapt to the adverse effects of global warming. One sucheffort would be to fund irrigation projects in these countries sothat they can have self-sufficiency regarding food.
The adverseimpacts of the climate change brought about by global warming havenot hit Africa alone. Even the developed countries have experiencedthe effects. For example, flooding in Europe and the United Stateshas become more severe (Pearce, David, Edward and Markandya 238). Many lives have been lost due to the severe flooding. Animals toohave become endangered. The melting of polar ice has resulted in theloss of habitat and food for the polar bear. If nothing is done toreverse the situation, polar bears may become extinct. All over theworld, there is an agreement that climate change is real. Scientistshave provided precise data that give predictions on what will happento the world if no action is taken to curb global warming (Pearce,David, Edward and Markandya 239).  Consequently, many countriesincluding China have agreed on the need to reduce the levels ofgreenhouse gases emitted into the atmosphere. However, the journeyhas not been an easy one. The push for action against climate changenow spearheaded by the United Nations started with activists. Thecurrent methods of production have been shown to contribute to thedevastating effects of the climate change. However, withoutdevelopment countries will remain poor. The United Nations committeeon climate change developed a plan to reduce emissions to zeropercent by the year 2060 through the adoption of greeneconomies(Pearce, David, Edward and Markandya 239).  Typically,a green economy is environmentally conscious. Such an economy usesclean energy. Examples of clean energy are solar and wind. Notably,clean energy in many instances is also renewable. In addition, cleanenergy ensures sustainability in development. The adverse impacts ofclimate change will not end abruptly after all countries havecommitted to reducing the levels of the greenhouse emissions. Expertswarn that temperatures will keep rising in the near future and itwill be hard to restore the climate to pre-industrial revolutionlevels. However, not acting now may have severe impacts on the nextgenerations. Therefore, global leaders deserve an applause for seeingthe need to take action against climate change. Importantly,companies, especially in the automobile sector, are adoptingtechnologies that reduce emissions from the vehicles.  Inaddition, they are developing electric cars as the means of mobilityfor the future. The actions taken by the politicians and companiesshows there is goodwill to end global warming.
In conclusion,climate change is no longer considered a hoax. Everybody agrees onthe need to reduce the levels of greenhouse gases emitted into theatmosphere. Countries are encouraged to use clean energy forproduction. Notably, consumers today prefer products that areproduced in a process that is environmentally conscious. Therefore,companies are on the frontline in the fight against climate change.The more the product is green, the more customers it attracts andvice versa. Importantly, clean energy ensures sustainability inproduction.
Pearce, David,Edward Barbier, and Anil Markandya. Sustainable development:economics and environment in the Third World. Routledge, 2013:234-244