3. Climate is the usual weather of a place. Climate
can be different for different seasons. A place
might be mostly warm and dry in the summer.
The same place may be cool and wet in the
winter. Different places can have different
climates. You might live where it snows all the
time. And some people live where it is always
warm enough to swim outside!
4. There's also Earth's climate. Earth's climate is
what you get when you combine all the climates
around the world together.
5.
6. Climate change is a change in the usual weather
found in a place. This could be a change in how
much rain a place usually gets in a year. Or it
could be a change in a place's usual
temperature for a month or season.
7. Climate change is also a change in
Earth's climate. This could be a change
in Earth's usual temperature. Or it
could be a change in where rain and
snow usually fall on Earth.
8. Weather can change in just a few hours.
Climate takes hundreds or even millions of
years to change.
10. Earth's climate is always changing. There have
been times when Earth's climate has been
warmer than it is now. There have been times
when it has been cooler. These times can last
thousands or millions of years.
11. People who study Earth see that Earth's climate is
getting warmer. Earth's temperature has gone up
about one degree Fahrenheit in the last 100 years.
This may not seem like much. But small changes in
Earth's temperature can have big effects.
12. Some effects are already happening. Warming of
Earth's climate has caused some snow and ice to
melt. The warming also has caused oceans to rise.
And it has changed the timing of when certain plants
grow.
14. Many things can cause climate to change all
on its own. Earth's distance from the sun
can change. The sun can send out more or
less energy. Oceans can change. When a
volcano erupts, it can change our climate.
15. Most scientists say that humans can change
climate too. People drive cars. People heat and
cool their houses. People cook food. All those
things take energy. One way we get energy is by
burning coal, oil and gas. Burning these things
puts gases into the air. The gases cause the air
to heat up. This can change the climate of a
place. It also can change Earth's climate.
17. Scientists think that Earth's temperature will
keep going up for the next 100 years. This
would cause more snow and ice to melt. Oceans
would rise higher. Some places would get
hotter. Other places might have colder winters
with more snow. Some places might get more
rain. Other places might get less rain. Some
places might have stronger hurricanes.
19. Scientists think we can do things to stop the climate
from changing as much. You can help by using less
energy and water. Turn off lights and TVs when you
leave a room. Turn off the water when brushing your
teeth. You also can help by planting trees.
Another way to help is by learning about Earth. The
more you know about Earth, the more you can help
solve climate problems.
21. Greenhouses gases, such as carbon dioxide, trap
heat in the atmosphere and regulate our climate.
These gases exist naturally, but humans add more
carbon dioxide by burning fossil fuels for energy
(coal, oil, and natural gas) and by clearing forests.
Greenhouse gases act like a blanket. The thicker the
blanket, the warmer our planet becomes. At the
same time, the Earth’s oceans are also absorbing
some of this extra carbon dioxide, making them
more acidic and less hospitable for sea life.
22. The increase in global temperature is
significantly altering our planet’s climate,
resulting in more extreme and
unpredictable weather. For instance, heat
waves are becoming more frequent and
many places are experiencing record
droughts followed by intense rainfalls.
23. SCIENTISTS AGREE, HUMANS CAUSE CLIMATE CHANGE
Scientists in the United States and the world have
reached an overwhelming consensus that climate
change is real and caused primarily by human activity.
Respected scientific organizations such as the National
Academy of Science, the Intergovernmental Panel on
Climate Change (IPCC) and World Meteorological
Association (WMO) have all identified climate change as
an urgent threat caused by humans that must be
addressed.
24. “The need for urgent action to address
climate change is now indisputable.”
— National Academy of Science
25. FOSSIL FUELS
Burning fossil fuels, such as coal, oil and
natural gas, to generate energy has the
greatest impact on the atmosphere
than any other single human activity.
Globally, power generation is
responsible for about 23 billion tonnes
of CO2 emissions per year – in excess of
700 tonnes every second. Coal is
especially damaging to our atmosphere,
releasing 70% more carbon dioxide than
natural gas for every unit of energy
produced.
26.
27. Humans and wild animals face new
challenges for survival because of climate
change. More frequent and intense
drought, storms, heat waves, rising sea
levels, melting glaciers and warming oceans
can directly harm animals, destroy the
places they live, and wreak havoc on
people’s livelihoods and communities.
28. Climate change affects all regions around the
world. Polar ice shields are melting and the sea
is rising. In some regions extreme weather
events and rainfall are becoming more
common while others are experiencing more
extreme heat waves and droughts.
These impacts are expected to intensify in the
coming decades.
29. Melting ice and rising seas
When water warms up it expands. At the
same time global warming causes polar ice
sheets and glaciers to melt.
The combination of these changes is
causing sea levels to rise, resulting
in flooding and erosion of coastal and low
lying areas.
30.
31. Extreme weather, shifting rainfall
Heavy rain and other extreme weather
events are becoming more frequent. This
can lead to floods and decreasing water
quality, but also decreasing availability of
water resources in some regions.
32. Risks for human health
Climate change is already having an impact on
health:
- There has been an increase in the number of heat-
related deaths in some regions and a decrease in
cold-related deaths in others.
- We are already seeing changes in the distribution of
some water-borne illnesses and disease vectors.
33. Costs for society and economy
Damage to property and infrastructure and to human
health imposes heavy costs on society and the
economy.
Between 1980 and 2011 floods affected more than 5.5
million people and caused direct economic losses of
more than €90 billion.
Sectors that rely strongly on certain temperatures
and precipitation levels such as agriculture, forestry,
energy and tourism are particularly affected.
34. Risks for wildlife
- Climate change is happening so fast that
many plants and animal species
are struggling to cope.
- Many terrestrial, freshwater and marine
species have already moved to new
locations. Some plant and animal species
will be at increased risk of extinction if
global average temperatures continue to
rise unchecked.