Nainika Mishra: in recent years, the world has witnessed a noticeable rise in temperature. People across the globe are experiencing longer, hotter summers and shorter winters. The increasing heat is no longer just a topic of discussion—it is a pressing environmental issue that demands urgent attention. But what is causing this day-by-day increase in heat? The answer lies in both natural and, more importantly, human-made factors.
Global Warming: The Leading Cause
The primary reason behind the rise in temperature is global warming. It refers to the gradual increase in Earth’s average temperature due to the buildup of greenhouse gases in the atmosphere. These gases—mainly carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O)—are released by burning fossil fuels such as coal, petrol, and diesel. When these gases accumulate in the atmosphere, they trap the sun’s heat, creating a “blanket” around the Earth. This results in higher surface temperatures and extreme climate changes.
Rapid Urbanization and Industrial Growth.
Modern cities are growing fast, often at the cost of the environment. Forests are being cleared to make way for buildings, roads, and factories. This urban expansion replaces natural green spaces with concrete and asphalt, which absorb and retain more heat. This phenomenon, known as the urban heat island effect, makes cities significantly warmer than surrounding rural areas.
Deforestation and Loss of Green Cover.
Forests play a crucial role in controlling the Earth’s temperature. Trees absorb carbon dioxide and release oxygen, helping to maintain a balanced climate. However, large-scale deforestation for agriculture, infrastructure, and other human needs has reduced the number of trees worldwide. With fewer trees to absorb CO₂, the amount of greenhouse gases in the atmosphere rises, intensifying global warming and increasing daily heat.
Pollution and Use of Fossil Fuels.
The excessive use of fossil fuels in transportation, industries, and electricity generation releases large amounts of pollutants and greenhouse gases. Air pollution not only harms human health but also contributes to the warming of the atmosphere. Despite efforts to shift toward renewable energy, much of the world still depends on non-renewable sources, worsening the problem.
Climate Change and Extreme Weather
As a result of global warming, climate change is now visible in our daily lives. Heatwaves have become more frequent, intense, and longer-lasting. Regions that once had moderate climates are now experiencing record-breaking temperatures. Glaciers are melting, sea levels are rising, and natural disasters like wildfires and droughts are becoming more common.
What Can Be Done?
Although the situation is serious, it is not hopeless. Governments, industries, and individuals all have a role to play. We can reduce greenhouse gas emissions by:
. Using renewable sources of energy like solar and wind.
. Promoting public transport and reducing vehicle use.
. Planting more trees and protecting forests.
.Adopting energy-saving habits at home and in workplaces.
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