World Population and World Population and Water ScarcityWater Scarcity

PopulationPopulation

• The 6 billionth person was born on October 12, The 6 billionth person was born on October 12, 1999 according to the United Nations.1999 according to the United Nations.

• Every second 5 people are born and 2 people Every second 5 people are born and 2 people die, a net gain of 3 people. At this rate, the die, a net gain of 3 people. At this rate, the world population will double every 40 years world population will double every 40 years and would be 12 billion in 40 years, 24 billion and would be 12 billion in 40 years, 24 billion in 80 years, and more than 48 billion in 120 in 80 years, and more than 48 billion in 120 years. years.

• However the United Nations estimate that However the United Nations estimate that world population will stabilize at 12 billion in world population will stabilize at 12 billion in 120 years, citing that effective family planning 120 years, citing that effective family planning will result in a universally low birth rate will result in a universally low birth rate

World PopulationWorld Population

• Global population reached Global population reached one billion in 1804, hit two one billion in 1804, hit two billion 123 years later in billion 123 years later in 1927, but since then has 1927, but since then has taken only 72 years to taken only 72 years to triple. triple.

• The world is adding about The world is adding about 78 million more people 78 million more people every year, equivalent to every year, equivalent to the population of France, the population of France, Greece and Sweden Greece and Sweden combined, orcombined, ora city the size of San a city the size of San Francisco every three Francisco every three days. days.

World PopulationWorld Population

• India is set to India is set to overtake China as overtake China as the world's most the world's most populous nation populous nation by 2050, while by 2050, while some countries some countries will shrink by will shrink by nearly 40%, nearly 40%, according to new according to new research.research.

Population PyramidPopulation Pyramid

World PopulationWorld Population

• In the year through the end of March In the year through the end of March 2009, the number of births in Japan fell for 2009, the number of births in Japan fell for the first time since 2006 to 1.08 million, the first time since 2006 to 1.08 million, while there were 1.13 million deaths. Put while there were 1.13 million deaths. Put together, that adds up to a record decline together, that adds up to a record decline in the population of 45,914.in the population of 45,914.

• The number of Japanese 65 or older The number of Japanese 65 or older increased to a record 28.21 million out of increased to a record 28.21 million out of total population of 127 million total population of 127 million

World PopulationWorld Population

Water ScarcityWater Scarcity

• At present 1.1 billion people lack access to At present 1.1 billion people lack access to clean water and 2.4 billion lack access to clean water and 2.4 billion lack access to proper sanitation, nearly all of them in the proper sanitation, nearly all of them in the developing countries developing countries

• Only 2.53% of the water on earth is Only 2.53% of the water on earth is freshwater.freshwater.

• 2/3 of this freshwater is locked in glaciers 2/3 of this freshwater is locked in glaciers and permanent snow cover.and permanent snow cover.

• One of the main reasons for water One of the main reasons for water scarcity=population growthscarcity=population growth

Water ScarcityWater Scarcity

Water ScarcityWater Scarcity

• Water scarcity affects one in three Water scarcity affects one in three people on every continent of the people on every continent of the globe. The situation is getting worse globe. The situation is getting worse as needs for water rise along with as needs for water rise along with population growth, urbanization and population growth, urbanization and increases in household and industrial increases in household and industrial uses. uses.

Water ScarcityWater Scarcity

• One quarter of the global population One quarter of the global population also live in developing countries that also live in developing countries that face water shortages due to a lack of face water shortages due to a lack of infrastructure to fetch water from infrastructure to fetch water from rivers and aquifers. rivers and aquifers.

Water ScarcityWater Scarcity