9. DO WE SHOULDER OUR
RESPONSIBILITY OF KEEPING
OUR CLASSROOM CLEAN?
10. OR DO WE FEEL IT IS
SOMEONE ELSE’S
RESPONSIBILITY?
11.
12.
13. IS THIS NOT A FAMILIAR
SCENE FOR ALL OF US?
YET, DON’T WE
IGNORE IT?
14. • Shields the earth and
helps maintain a
consistent
temperature.
• Shields the earth and
helps maintain a
consistent
temperature.
• Gases in appropriate
proportion are
necessary for survival.
• Gases in appropriate
proportion are
necessary for survival.
• Life first began in
water.
• Life first began in
water.
• A constant and mild
temperature is
required.
• A constant and mild
temperature is
required.
Temperatu
re
Temperatu
re
WaterWater
Atmospher
e
Atmospher
e
GasesGases
CONDITIONS FOR LIFE TO EXIST
15. SEVEN BILLION EXPECTATIONS,ONE PLANET
• Ever-growing human demand for resources, however,
is putting tremendous pressure on biodiversity. This
threatens the continued provision of ecosystem
services, which not only further threatens biodiversity,
but also our own future security, health and well-
being.
• At our current rate of consumption, the Earth needs
1.5 years to produce and replenish the natural
resources that we consume in a single year.
• The current world population was 7,263,913,077
(check the site www.worldometers.info).
16. STATISTICS OF INDIAN POPULATION
Current Population of
India in 2014
1,270,272,105 (1.27
billion)
Total Male Population in
India
655,875,026 (655.8
million)
Total Female Population in
India
614,397,079 (614.4
million)
Sex Ratio 940 females per 1,000
males
Age structure
0 to 25 years 50% of India's current
population
Currently, there are about 51 births in India in a minute.
India's Population in 2012 1.22 billion
India's Population in 2011 1.21 billion
17. THE LIVING PLANET INDEX
The living planet index reflects changes in the
state of the planet’s biodiversity. The living
planet index continues to show a 28 per cent
global decline in biodiversity health since 1970 .
18. THE LIVING PLANET INDEX
The tropical living planet index declined
by more than 60 per cent from 1970 to
2008, while the temperate living planet
index increased by 31 per cent over the
same period. Recent average population
rises do not necessarily mean that
temperate ecosystems are in better state
than tropical ecosystems.
19. THE ECOLOGICAL FOOTPRINT
• The ecological footprint tracks humanity’s demands on the biosphere by comparing the
renewable resources people are consuming against the earth’s regenerative capacity,
or biocapacity. Both the ecological footprint and biocapacity are expressed in a
common unit called a global hectare, in which one gha represents a biologically
productive hectare with average productivity.
20. THE ECOLOGICAL FOOTPRINT(contd.)
• In 2008, the earth’s total
biocapacity was 12.0 billion gha, or
1.8 gha per person, while
humanity’s ecological footprint was
18.2 billion gha, or 2.7 gha per
person.
21. THE ECOLOGICAL FOOTPRINT(contd.)
• This discrepancy means that we are in an ecological overshoot situation: it is taking 1.5
years for the earth to fully regenerate the renewable resources that people are using in
a single year. Instead of living off the interest, we are eating into our natural capital.
24. LINKING BIODIVERSITY, ECOSYSTEM
SERVICES AND PEOPLE
• Biodiversity is vital for human health and livelihoods. Living organisms – plants, animals
and microorganisms – interact to form complex, interconnected webs of ecosystems and
habitats, which in turn supply a myriad of ecosystem services upon which all life
depends. Although technology can replace some ecosystem services and buffer against
their degradation, many cannot be replaced.
• Understanding the interactions between biodiversity, ecosystem services and people is
fundamental to reversing the trends outlined in the previous pages and so safeguarding
the future security, health and well-being of human societies.
27. Introduction
• Is the world getting warmer?
• If so, are the actions of mankind to blame for earth’s
temperature increases?
• What should be done about these issues?
28. History of Earth’s Climate
• Earth formed ~4.6 billion years ago
• Originally very hot
• Sun’s energy output only 70% of present
29. History of Earth’s Climate
• Life appeared ~3.8 billion years ago
• Photosynthesis began 3.5-2.5 billion years ago
• Produced oxygen and removed carbon dioxide and methane
(greenhouse gases)
• Earth went through periods of cooling (“Snowball Earth”) and warming
36. Effects of global warming
Rising Seas
Changes in rainfall patterns
Melting of the ice caps
Melting glaciers
Widespread vanishing of animal population
Spread of Diseases
37. Hunger
Hunger is the uneasy or painful sensation caused by
want of food; craving appetite.
The world produces enough food to feed everyone.
World agriculture produces 17 percent more calories
per person today than it did 30 years ago, despite a
70 percent population increase.
44. Indroduction
• Water pollution occurs when harmful substances are released
into the water in large quantities which cause damage to
people, wildlife, or habitat or indirectly into water bodies
without proper treatment to remove harmful compounds.
45. Effects of water pollution
• Water pollution is a major
environmental issue in India.
• The largest source of water
pollution in India is untreated
sewage
• The Ganges River Pollution is now
at such a high level that the
amount of toxins, chemicals and
other dangerous bacteria found in
the river are now almost 3000
times over the limit suggested by
the WHO as 'safe'.
94. ROLE OF AN ENGINEER
“Engineers … are not mere technicians and should not approve or lend their name
to any project that does not promise to be beneficial to man and the advancement
of civilization’’
-John Fowler
95.
96. • An engineer has big role to play as far ecological control is concerned. Engineering is art
of utilizing the great sources of power in nature. It is a very vital organ for the benefit,
convenience and survival of mankind. The branch of engineering involves manpower,
money, materials, machines and energy.
Engineer plays important role towards environmental protection as is evident from the
following points :-
[1]. He can help in selecting such a site which ;
(i) is pollution free
(ii) has less chances of atmosphere pollution
(iii) capacity to absorb pollutants.
(Iv) is gifted with sufficient quantity of pure water.
ROLE OF AN ENGINEER
97. [2]. He can help in layout plan in such a way
that
(i) atmosphere is not polluted.
(ii) pollution, if any, affect very few people.
(iii) pollutants do not move outside the factory
but are absorbed within the space available for
factory.
ROLE OF AN ENGINEER
98. [3]. He can plan out some space within the factory premises for the disposal of poisonous
waste material.
ROLE OF AN ENGINEER
99. [4]. He can plan such a short route of disposal of pollutants in natural stream or
rivers that the habitation and vegetation is least affected.
ROLE OF AN ENGINEER
100. OUR RESPONSIBILITY REVISITED
Carbon sequestration means capturing carbon dioxide (CO2) from the
atmosphere or capturing anthropogenic (human) CO2 from large-scale stationary
sources like power plants before it is released to the atmosphere. Once captured, the
CO2 gas (or the carbon portion of the CO2) is put into long-term storage.
CO2 sequestration has the potential to significantly reduce the level of carbon that
occurs in the atmosphere as CO2 . There are two major types of CO2 sequestration:
Terrestrial
Geologic
REDUCING CARBON FOOTPRINTS
101. TERRESTRIAL SEQUESTRATION
Terrestrial (or biologic)
sequestration means using
plants to capture CO2 from
the atmosphere and then
storing it as carbon in the
stems and roots of the plants
as well as in the soil.
103. 1. SOIL DATA CARD
• Since India is an agricultural country , inorder for it to reach new heights there
should be a boom in the agricultural field.
• Having noticed this, Our Prime Minister Mr. Narendra Modi has focused entirely on
soil health management.
• Agriculture minister Mr.Rao proposed to start the massive programme called
‘bhuchetana’.It proposes that every farmer should know the quality of his/her soil
and hence grow only those crops which the soil is suited for. The soil data card that
will be produced will be computerized.
105. 2. ZERO DEFECT , ZERO EFFECT
• Prime Minister Narendra Modi's "zero defect and zero effect" remark on 15th
August,2014 came as a clear message that the country would not compromise on its
goal of environmental protection. His categorical remark gives a clear message that
the country will move on its low-carbon and sustainable growth trajectory while
adopting clean technology and renewable energy in a big way.
111. ZERO EFFECT
MOTTO: “GREEN PRODUCT FROM GREEN PLANT FOR GREEN ENVIRONMENT”
A) We can reduce the carbon foot prints by using solar energy for oil processing and natural
gas for heating ovens.
B)Rain water harvesting.
C) By automated design using CAD we have been able to design products with lesser
materials to reduce carbon foot prints.
114. 4. USE BLACKLE
• Blackle is a website powered by google custom search and created by heap media , which
aims to save energy by displaying a black background and using grayish-white font color
for search results.
• "Image displayed is primarily a function of the user's color settings and desktop graphics,
as well as the color and size of open application windows; a given monitor requires more
power to display a white (or light) screen than a black (or dark) screen." Roberson et al,
2002.
• Google gets about “200 million queries” a day. Blackle claims to save about 750-
megawatt-hours a year. Hence,a substantial amount of energy would be saved.
<number>
In examining global warming, we will be looking at questions such as
Is the world getting warmer?
If so, are the actions of mankind to blame for earth’s temperature increases?
What can or should be done about global warming?
Are the potential resolutions to global warming worth the cost to implement them?
<number>
This is a big picture examination of the earth’s climate
The Earth was formed around 4.6 billion years ago
And was originally very hot
However, the Sun’s energy output was only 70% of what it is presently
Liquid water was present on the surface around 4.3 billion years ago
<number>
The first life forms appeared ~3.8 billion years ago
Photosynthesis began 3.5-2.5 billion years ago,
which produced oxygen and removed carbon dioxide and methane, which are greenhouse gases, from the atmosphere
As a result, the Earth went through periods of cooling, commonly referred to as “Snowball Earth” and subsequent warming
Earth began its current cycles of glacial and interglacial periods around 3 million years ago
<number>
The temperature of the earth is directly related to the energy input from the Sun. Some of the Sun’s energy is reflected by clouds. Other is reflected by ice. The remainder is absorbed by the earth.
<number>
If amount of solar energy absorbed by the earth is equal to the amount radiated back into space, the earth remains at a constant temperature.
<number>
However, if the amount of solar energy is greater than the amount radiated, then the earth heats up.
<number>
If the amount of solar energy is less than the amount radiated, then the earth cools down.
<number>
To a certain degree, the earth acts like a greenhouse. Energy from the Sun penetrates the glass of a greenhouse and warms the air and objects within the greenhouse. The same glass slows the heat from escaping, resulting in much higher temperatures within the greenhouse than outside it.
<number>
Likewise, the earth’s atmospheric gases affect the ability of the earth to radiate the Sun’s energy back into space. Nitrogen and Oxygen make up 99% of the earth’s atmospheric gases and are non-greenhouse gases. Water, Carbon Dioxide, and Methane make up 1% of the earth’s atmosphere, but are greenhouse gases, since they cause the earth to retain heat.