The world is changing. Let’s do something about it.

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Climate
change
The world is changing. Let’s do
something about it.
Anastasia Mihai

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What is climate
change?
Global warming is a phenomenon of
climate change characterized by a general
increase in average temperatures of the Earth,
which modifies the weather balances and
ecosystems for a long time. It is directly linked
to the increase of greenhouse gases in our
atmosphere, worsening the greenhouse effect.

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Why is this happening?
Scientists attribute the global warming trend observed since the mid-20th
century to the human expansion of the "greenhouse effect" that results when the
atmosphere traps heat radiating from Earth toward space.
On Earth, human activities are changing the natural greenhouse. Over the last century
the burning of fossil fuels like coal and oil has increased the concentration of
atmospheric carbon dioxide (CO2). This happens because the coal or oil burning
process combines carbon with oxygen in the air to make CO2. To a lesser extent, the
clearing of land for agriculture, industry, and other human activities has increased
concentrations of greenhouse gases.

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Dangerous effects on us
Global climate change has already had
observable effects on the environment. Glaciers have
shrunk, ice on rivers and lakes is breaking up earlier,
plant and animal ranges have shifted and trees are
flowering sooner.
So, the Earth's average temperature has
increased about 2 degrees Fahrenheit during the 20th
century. What's the big deal?
Two degrees may sound like a small amount,
but it's an unusual event in our planet's recent history.
Earth's climate record, preserved in tree rings, ice
cores, and coral reefs, shows that the global average
temperature is stable over long periods of time.
Furthermore, small changes in temperature correspond
to enormous changes in the environment.
For example, at the end of the last ice age,
when the Northeast United States was covered by more
than 3,000 feet of ice, average temperatures were only
5 to 9 degrees cooler than today.

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Temperatures will continue to rise because human-induced warming is
superimposed on a naturally varying climate, the temperature rise has not been,
and will not be, uniform or smooth across the country or over time.
Droughts in the Southwest and heat waves (periods of abnormally hot
weather lasting days to weeks) everywhere are projected to become more intense,
and cold waves less intense everywhere.
The intensity, frequency and duration of North Atlantic hurricanes, as well
as the frequency of the strongest hurricanes, have all increased since the early
1980s. The relative contributions of human and natural causes to these increases
are still uncertain. Hurricane-associated storm intensity and rainfall rates are
projected to increase as the climate continues to warm.
Global sea level has risen by about 8 inches since reliable record keeping
began in 1880. It is projected to rise another 1 to 4 feet by 2100. This is the result
of added water from melting land ice and the expansion of seawater as it warms.

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What can we do to help?
1.Renewable energies
The first way to prevent
climate change is to move
away from fossil fuels. What
are the alternatives?
Renewable energies like solar,
wind, biomass and
geothermal.
2.Energy & water
efficiency
Producing clean energy is
essential, but reducing our
consumption of energy and
water by using more efficient
devices (e.g. LED light bulbs,
innovative shower system) is
less costly and equally
important.
3.Sustainable
transportation
Promoting public
transportation, carpooling, but
also electric and hydrogen
mobility, can definitely help
reduce CO2 emissions and thus
fight global warming.

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5.Sustainable agriculture &
forest management
Encouraging better use of natural
resources, stopping massive
deforestation as well as making
agriculture greener and more
efficient should also be a priority.
6.Responsible
consumption & recycling
Adopting responsible
consumption habits is crucial, be
it regarding food (particularly
meat), clothing, cosmetics or
cleaning products. Last but not
least, recycling is an absolute
necessity for dealing with waste.
4.Sustainable infrastructure
In order to reduce the CO2 emissions
from buildings - caused by heating, air
conditioning, hot water or lighting - it is
necessary both to build new low energy
buildings, and to renovate the existing
constructions.

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Thank you
for
watching!