I.

INTRODUCTION
- Hello everyone, welcome to Group 1 News, in today’s topic, we will discuss about
the global warming, how it happens and how to solve it.
II. CAUSES
- First, let’s talk about the causes of global warming. Glaciers are melting, sea levels
are rising, cloud forests are dying and wildlife is scrambling to keep pace and we
often call the result “Global Warming”. So, how does it happen? There are 4 main
causes of global warming. Before getting into it, do you think one of the causes are
from our Sun? I mean, the Earth receives its warmth from the Sun, so it is
reasonable to suspect our home star may be one of the reasons for global warming,
or is it? Although the amount of energy coming from the sun does vary and may
have been responsible for warming in the past, however, NASA and the
Intergovernmental Panel on Climate Change (IPCC) have ruled this out as a cause of
the current warming trend. Alright, let’s move on to the first cause.
- The first one is human’s industrial activities. Since the Industrial Revolution,
humans have been burning fossil fuels such as coal and petroleum for energy, which
releases carbon dioxide into the atmosphere. A quarter of this is for heat and
electricity, while another quarter is for other industrial processes and
transportation, which includes gasoline- or diesel-powered cars, trucks, trains and
airplanes. The other half of the energy is used for various other purposes, including
agriculture, cement production and oil and gas production. These processes also
release other greenhouse gases, such as methane and CFCs, although the
concentration of CFCs has declined since their use was banned in 1988.
- The second cause is the agricultural activities. The agricultural practices that
produce food for the people on earth is another of the human causes of climate
change. The use of both commercial and organic fertilizers releases nitrous oxide, a
powerful greenhouse gas. Methane, another important greenhouse gas, comes from
many natural sources, but also from the digestive systems of livestock raised for
meat production as well as the decomposition of waste in landfills and the burning
of biomass.
- The third cause is deforestation. The increased demand for meat and dairy cattle
has led to the creation of feed lots in otherwise forested areas. Logging for wood
and paper and clearing for crop production also requires trees to be cut, sometimes
illegally. One mature tree absorbs as much as 48 pounds of carbon dioxide each
year, and by many trees are cut down every year one estimate, 3.5 to 7 billion are
cut every year. According to Scientific American, deforestation is responsible for 15
percent of the greenhouse gases in the atmosphere.
- And the final cause is Earth’s own feedback loop. As the atmosphere warms, it is
able to hold more water, which is already the most abundant greenhouse gas. This
creates a feedback loop that accelerates global warming. It also creates more clouds,
 rainstorms and other symptoms of climate change. At the poles, the warming of the
atmosphere melts the ice cover, exposing water, which is less reflective than ice. The
water absorbs the sun's heat, and the oceans also become warmer as a result.
III. EFFECTS
- Now, let’s go on to the effects of global warming.
- One of the most concerning impacts of global warming is the effect warmer
temperatures will have on Earth's Polar Regions and mountain glaciers. The Arctic is
warming four times faster than the rest of the planet. This warming reduces critical
ice habitat and it disrupts the flow of the jet stream, creating more unpredictable
weather patterns around the globe.
- A warmer planet doesn't just raise temperatures. Precipitation is becoming more
extreme as the planet heats. For every degree your thermometer rises, the air holds
about seven percent more moisture. This increase in moisture in the atmosphere
can produce flash floods, more destructive hurricanes, and even paradoxically,
stronger snow storms.
- The world's leading scientists regularly gather to review the latest research on how
the planet is changing. The results of this review is synthesized in regularly published
reports known as the Intergovernmental Panel on Climate Change (IPCC) reports
- And I have a few examples of the effects of global warming:
+ Coral reefs are now a highly endangered ecosystem. When corals face
environmental stress, such as high heat, they expel their colorful algae and turn a
ghostly white, an effect known as coral bleaching. In this weakened state, they more
easily die.
+ Trees are increasingly dying from drought, and this mass mortality is reshaping
forest ecosystems.
+ Rising temperatures and changing precipitation patterns are making wildfires more
common and more widespread. Research shows they're even moving into the
eastern U.S. where fires have historically been less common.
+ Hurricanes are growing more destructive and dumping more rain, an effect that
will result in more damage.
IV. HOW TO LIMIT GLOBAL WARMING
- Reduce Greenhouse Gas Emissions:
+ Transition to Renewable Energy: Shift from fossil fuels to renewable energy
sources like solar, wind, and hydroelectric power.
+ Energy Efficiency: Improve energy efficiency in buildings, vehicles, and appliances
to reduce energy consumption.
- Sustainable Transportation:
+ Public Transport: Promote the use of public transportation, cycling, and walking.
+ Electric Vehicles: Encourage the adoption of electric and hybrid vehicles.
- Sustainable Agriculture:
+ Organic Farming: Support sustainable farming practices that reduce greenhouse
gas emissions and enhance carbon sequestration.
+ Plant-Based Diets: Reduce meat consumption, as livestock farming is a significant
source of methane emissions.
- Reforestation and Conservation:
+ Plant Trees: Support reforestation and afforestation projects.
+ Protect Forests: Prevent deforestation and promote sustainable land use.
- Waste Management:
+ Reduce, Reuse, Recycle: Minimize waste production and maximize recycling
efforts.
+ Methane Capture: Implement technologies to capture methane emissions from
landfills.
- Policy and Legislation:
+ Climate Policies: Advocate for strong climate policies and international agreements
to limit greenhouse gas emissions.
+ Carbon Pricing: Implement carbon pricing mechanisms like carbon taxes or cap-
and-trade systems.
- Education and Advocacy:
+ Raise Awareness: Educate the public about climate change and the importance of
taking action.
+ Support Climate Initiatives: Get involved in or support organizations and initiatives
working to combat climate change.
- Innovation and Technology:
+ Invest in Research: Support research and development of new technologies to
reduce emissions and enhance sustainability.
+ Adopt Green Technologies: Encourage the use of green technologies in various
sectors.

THAT’S THE END! THANKS FOR WATCHING EVERYONE!