1. World Population and Water Scarcity

2. Population The 6 billionth person was born on October 12, 1999 according to the United Nations. The 6 billionth person was born on October 12, 1999 according to the United Nations. Every second 5 people are born and 2 people die, a net gain of 3 people. At this rate, the world population will double every 40 years and would be 12 billion in 40 years, 24 billion in 80 years, and more than 48 billion in 120 years. Every second 5 people are born and 2 people die, a net gain of 3 people. At this rate, the world population will double every 40 years and would be 12 billion in 40 years, 24 billion in 80 years, and more than 48 billion in 120 years. However the United Nations estimate that world population will stabilize at 12 billion in 120 years, citing that effective family planning will result in a universally low birth rate However the United Nations estimate that world population will stabilize at 12 billion in 120 years, citing that effective family planning will result in a universally low birth rate

3. World Population Global population reached one billion in 1804, hit two billion 123 years later in 1927, but since then has taken only 72 years to triple. Global population reached one billion in 1804, hit two billion 123 years later in 1927, but since then has taken only 72 years to triple. The world is adding about 78 million more people every year, equivalent to the population of France, Greece and Sweden combined, or a city the size of San Francisco every three days. The world is adding about 78 million more people every year, equivalent to the population of France, Greece and Sweden combined, or a city the size of San Francisco every three days.

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

5. Population Pyramid

6. World Population In the year through the end of March 2009, the number of births in Japan fell for the first time since 2006 to 1.08 million, while there were 1.13 million deaths. Put together, that adds up to a record decline in the population of 45,914. In the year through the end of March 2009, the number of births in Japan fell for the first time since 2006 to 1.08 million, while there were 1.13 million deaths. Put together, that adds up to a record decline in the population of 45,914. The number of Japanese 65 or older increased to a record 28.21 million out of total population of 127 million The number of Japanese 65 or older increased to a record 28.21 million out of total population of 127 million

7. World Population

8. Water Scarcity At present 1.1 billion people lack access to clean water and 2.4 billion lack access to proper sanitation, nearly all of them in the developing countries At present 1.1 billion people lack access to clean water and 2.4 billion lack access to proper sanitation, nearly all of them in the developing countries Only 2.53% of the water on earth is freshwater. Only 2.53% of the water on earth is freshwater. 2/3 of this freshwater is locked in glaciers and permanent snow cover. 2/3 of this freshwater is locked in glaciers and permanent snow cover. One of the main reasons for water scarcity=population growth One of the main reasons for water scarcity=population growth

9. Water Scarcity

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

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

12. Water Scarcity