Climate Change
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- čas přidán 5. 09. 2024
- Climate change refers to long-term shifts in temperatures and weather patterns. Such shifts can be natural, due to changes in the sun’s activity or large volcanic eruptions. But since the 1800s, human activities have been the main driver of climate change, primarily due to the burning of fossil fuels like coal, oil and gas.
Burning fossil fuels generates greenhouse gas emissions that act like a blanket wrapped around the Earth, trapping the sun’s heat and raising temperatures.
The main greenhouse gases that are causing climate change include carbon dioxide and methane. These come from using gasoline for driving a car or coal for heating a building, for example. Clearing land and cutting down forests can also release carbon dioxide. Agriculture, oil and gas operations are major sources of methane emissions. Energy, industry, transport, buildings, agriculture and land use are among the main sectors causing greenhouse gases.
Humans are responsible for global warming
Climate scientists have showed that humans are responsible for virtually all global heating over the last 200 years. Human activities like the ones mentioned above are causing greenhouse gases that are warming the world faster than at any time in at least the last two thousand years.
The average temperature of the Earth’s surface is now about 1.2°C warmer than it was in the late 1800s (before the industrial revolution) and warmer than at any time in the last 100,000 years. The last decade (2011-2020) was the warmest on record, and each of the last four decades has been warmer than any previous decade since 1850.
Many people think climate change mainly means warmer temperatures. But temperature rise is only the beginning of the story. Because the Earth is a system, where everything is connected, changes in one area can influence changes in all others.
The consequences of climate change now include, among others, intense droughts, water scarcity, severe fires, rising sea levels, flooding, melting polar ice, catastrophic storms and declining biodiversity.
"We are the last generation that can prevent irreparable damage to our planet,”
General Assembly(UN)President María Fernanda Espinosa Garcés (Ecuador) warned the gathering in her opening remarks, stressing that 11 years are all that remain to avert catastrophe.
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Living will become very difficult if don't take action.
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According to the United Nations Intergovernmental Panel on Climate Change (IPCC), climate disasters will become so extreme that people will not be able to adapt beyond this threshold. This could lead to irreversible changes to the Earth system, such as the collapse of the Greenland and West Antarctic ice sheets, the die off of tropical coral reefs, and the abrupt thaw of boreal permafrost. These changes could also lead to millions of additional deaths from heat waves, famines, and infectious diseases by the end of the century.
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