James Hassen from NASA states that global warming is real and humans are in danger from it. He says global warming is caused by the greenhouse effect, where gases like carbon dioxide trap heat in the atmosphere. The main causes of global warming are burning fossil fuels and deforestation, which release greenhouse gases. If greenhouse gas levels continue rising, it will lead to problems like sea level rise from melting ice caps and more severe weather events. Some ways to reduce global warming are using renewable energy, recycling, and promoting activities that protect the environment.

2.  James HassenJames Hassen (NASA)(NASA)
states that the Earth isstates that the Earth is
getting hotter, he addsgetting hotter, he adds
that global warming is realthat global warming is real
and he is 99% sure that weand he is 99% sure that we
are in a present danger.are in a present danger.
 He said that globalHe said that global
warming is caused bywarming is caused by

3. Greenhouse effectGreenhouse effect
 It is due to the increaseIt is due to the increase
atmospheric Carbon dioxideatmospheric Carbon dioxide
and other gases that traps theand other gases that traps the
enormous amount of heatenormous amount of heat
coming from the sun inside ourcoming from the sun inside our
planet.planet.
 Its is so called GreenhouseIts is so called Greenhouse
effect because it is the same aseffect because it is the same as
the green house botanicalthe green house botanical

6. What is theWhat is the
causecause
GreenhouseGreenhouse
effect?effect?

7.  It is due to the burning ofIt is due to the burning of
fossil fuels, deforestation,fossil fuels, deforestation,
and the production of certainand the production of certain
synthetic chemicals thatsynthetic chemicals that
release enormous amount ofrelease enormous amount of
heat that traps gases in theheat that traps gases in the
atmosphere.atmosphere.
 These gases absorb theThese gases absorb the
earth’s infrared radiation andearth’s infrared radiation and
prevents it from escapingprevents it from escaping

11.  Greenhouse effect is notGreenhouse effect is not
bad at all because of thisbad at all because of this
phenomenon our planet didphenomenon our planet did
not freeze and life isnot freeze and life is
possible.possible.
 But due to excessBut due to excess
greenhouse gases there isgreenhouse gases there is
overheating inside ouroverheating inside our
planet that result to globalplanet that result to global

12. What are theWhat are the
greenhouse gasesgreenhouse gases
that can contribute tothat can contribute to
the formation ofthe formation of
greenhouse gases?greenhouse gases?
Where can we getWhere can we get
these greenhousethese greenhouse
gases?

13. Carbon dioxideCarbon dioxide
 A greenhouse gas that isA greenhouse gas that is
released in large quantitiesreleased in large quantities
when fossil fuels, oils andwhen fossil fuels, oils and
natural gas are burned.natural gas are burned.
 It came from incinerators,It came from incinerators,
waste treatment plants,waste treatment plants,
electric power plants,electric power plants,
factories, householdfactories, household
furnaces, cars and otherfurnaces, cars and other

14. MethaneMethane
 It came from bacterialIt came from bacterial
decomposition of organicdecomposition of organic
matter – in the landfills,matter – in the landfills,
flooded rice paddies, and gutsflooded rice paddies, and guts
of cattle and termites and byof cattle and termites and by
burning wood and fossil fuels.burning wood and fossil fuels.
 Methane is trapped in ice, thusMethane is trapped in ice, thus
due to global warming these icedue to global warming these ice
will break and methane gas arewill break and methane gas are
released.released.

15. Chlorofluorocarbons (CFC’s)Chlorofluorocarbons (CFC’s)
 CFC’s are important ingredientsCFC’s are important ingredients
in making refrigerator andin making refrigerator and
propellant gases for aerosolpropellant gases for aerosol
spray cans.spray cans.
 CFC’s is also found inCFC’s is also found in
Styrofoam.Styrofoam.
 When CFC’s escape into theWhen CFC’s escape into the
atmosphere, they trap heat.atmosphere, they trap heat.
 CFC’s also release ozone-CFC’s also release ozone-
depleting bromine that reducesdepleting bromine that reduces

16. Nitrous oxide
 It is emitted due to human
activities (nitrogen cycle).
 Nitrous oxide are released
when coal and other fossil
fuels are burned.
 It often turn as nitric acid in
the atmosphere and fall as acid
rain in the ground.

17. Carbon monoxideCarbon monoxide
 Carbon monoxide are releasedCarbon monoxide are released
in the atmosphere due to thein the atmosphere due to the
chemical breakdown ofchemical breakdown of
methane by burning fuels andmethane by burning fuels and
by burning trees from forest.by burning trees from forest.
 It often react easily withIt often react easily with
other chemicals in the air.other chemicals in the air.

18. OzoneOzone
 It provide protective shieldIt provide protective shield
in the atmosphere againstin the atmosphere against
the sun rays.the sun rays.
 It is destructive as it reachIt is destructive as it reach
the ground, plants arethe ground, plants are
killed due to ozonekilled due to ozone
toxicity.toxicity.

19. What are theWhat are the
causes of Globalcauses of Global
warming?warming?

20. Increase in populationIncrease in population
growthgrowth
 Over population can releaseOver population can release
large amount of Greenhouselarge amount of Greenhouse
gases every year due togases every year due to
human consumption.human consumption.
 The use of energy, the useThe use of energy, the use
fossil fuel and many more.fossil fuel and many more.

23. Exhaust fumes/ SmokeExhaust fumes/ Smoke
and other gasesand other gases
 Burning of fossil fuels byBurning of fossil fuels by
factories, vehicles and otherfactories, vehicles and other
smoke releasing machinessmoke releasing machines
has a great contribution inhas a great contribution in
the formation of globalthe formation of global
warming.warming.

29. Farts from cattle
including herbivore
animals
 Livestock like cattle releases
methane gas due to the
presence of methanogens in
their body contribute to the
release of these greenhouse
gases.

32. Gases from marshes,Gases from marshes,
swamps, and rice paddyswamps, and rice paddy
fieldsfields
 The release of Nitrous oxideThe release of Nitrous oxide
and other greenhouse gasesand other greenhouse gases
contribute to thecontribute to the
accumulation of these gasesaccumulation of these gases
in the atmosphere.in the atmosphere.

34. What are theWhat are the
possible effectspossible effects
of Globalof Global
warming?warming?

35. Melting of the polar iceMelting of the polar ice
caps in the polarcaps in the polar
regions like the Arcticregions like the Arctic
and Antarctic ice sheetsand Antarctic ice sheets
contribute to sea levelcontribute to sea level
rise.rise.

39. Coastal areasCoastal areas
and islandsand islands
would bewould be
flooded.flooded.

42. Agriculture, waterAgriculture, water
resources,resources,
fisheries, shippingfisheries, shipping
and energy useand energy use
would all bewould all be
disrupted.disrupted.

44. Other parts of theOther parts of the
globe willglobe will
experienceexperience
drought.drought.

46. Stronger and moreStronger and more
dangerousdangerous
typhoon will betyphoon will be
experienced.experienced.

50. Many wildlifeMany wildlife
and trees willand trees will
die.die.

52. World’s foodWorld’s food
supply would besupply would be
dramaticallydramatically
affected.affected.

54. Diseases likeDiseases like
dengue, malariadengue, malaria
and schistosomiasisand schistosomiasis
incidents willincidents will
increase.increase.

56. There would beThere would be
massive coralmassive coral
bleaching in thebleaching in the
coral reefs.coral reefs.

58. What are theWhat are the
possible ways topossible ways to
minimize the effectminimize the effect
of this Globalof this Global
warming?warming?

59. Promotion ofPromotion of
family planningfamily planning
to reduceto reduce
populationpopulation
growth.growth.

62. Educating people forEducating people for
reforestationreforestation
programs byprograms by
initiating eco-initiating eco-
tourism.tourism.

64. Car owners have toCar owners have to
switch to naturalswitch to natural
gas (biofuel) togas (biofuel) to
help cut downhelp cut down
Nitrous oxideNitrous oxide
emission.emission.

66. IntroduceIntroduce
recycling methodrecycling method
(the use and re-(the use and re-
use of materials).use of materials).

68. Turn off or plugTurn off or plug
out electricalout electrical
appliances if it isappliances if it is
not used.not used.

70. The use ofThe use of
fluorescent lightfluorescent light
bulb instead ofbulb instead of
incandescent lightincandescent light
bulb.bulb.

72. The use of alternativeThe use of alternative
form of energy suchform of energy such
as geothermal,as geothermal,
hydroelectric, solar,hydroelectric, solar,
and wind powerand wind power
energy.energy.

76. TreeTree
plantingplanting
activities.activities.

78. WasteWaste
managementmanagement
programs.programs.

80. SupportingSupporting
programs thatprograms that
help ourhelp our
environment.environment.

82. THANKTHANK
YOUYOU