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Global population.

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Presentation on theme: "Global population."— Presentation transcript:

1 Global population

2 world population peaks at 9. 22 billion in 2075
... world population peaks at 9.22 billion in Population therefore grows slightly beyond the level of 8.92 billion projected for 2050 in the 2002 Revision, on which these projections are based. However, after reaching its maximum, world population declines slightly and then resumes increasing, slowly, to reach a level of 8.97 billion by 2300, not much different from the projected 2050 figure. United Nations World Population to 2300

3 Projections recently issued by the United Nations suggest that world population by 2050 could reach 8.9 billion, but in alternative scenarios could be as high as 10.6 billion or as low as 7.4 billion. What will population trends be like beyond 2050? No one really knows. United Nations World Population to 2300

4 Much of the demographic change up to 2050 will take place in the less developed regions Collectively, these regions will grow 58 per cent over 50 years, as opposed to 2 per cent for more developed regions. Less developed regions will account for 99 per cent of the expected increment to world population in this period United Nations World Population to 2300

5 United Nations World Population to 2300

6 U.S. and World Population Clocks
U.S.: ,550,417 World: 7,013,576,265 19:56 UTC (EST+5) May 15, 2012 US Census Bureau

7 Do you consider that the world is addressing population growth intelligently?
Yes No Have not made up my mind

8 California’s population
California is the most populous state in the nation. With just over 37 million people, according to the 2010 Census, California is one and a half times as populous as second-place Texas (25 million). By 2020, California’s population is projected to reach 42 to 48 million people. Public Policy Institute of California

9 During the 20th century, California experienced tremendous population growth … In 1900, California was home to less than 2 million people; by 1950 the population had reached 10 million. California’s population growth rates slowed in the last half of the 20th century, but even so its population nearly tripled and its growth rate remained much higher than that of the rest of the United States. Public Policy Institute of California

10 … but growth has slowed in the past 20 years
… but growth has slowed in the past 20 years. Over the past 20 years, California has experienced its slowest rates of growth ever recorded and an unprecedented migration of residents to other states. From 2000 to 2010, California’s population grew by 10%, which was low for the state but still higher than the rest of the nation (9.7%). International migration to California remained strong: the state experienced a net inflow of around 2 million. But about 1.5 million more people left California for other states than came to California from other states. Natural increase—more births than deaths—added more than 3 million residents this past decade. Overall, California gained 3.4 million new residents. Public Policy Institute of California

11 California’s population is one of the world’s most diverse
California’s population is one of the world’s most diverse. No race or ethnic group constitutes a majority of the state’s population. According to the 2010 Census, 40% of state residents are non-Hispanic white, 38% are Hispanic, 13% Asian, 6% African American, 3% multiracial, and less than 1% American Indian. Among children, Hispanics are a slight majority (51%). Public Policy Institute of California

12 Almost 10 million Californians are immigrants
Almost 10 million Californians are immigrants. According to 2009 estimates, 27% of Californians (9.9 million) are foreign-born, a higher proportion than in any other state (New York is second with 21%) and twice the nationwide share (13%). The leading countries of origin for these immigrants are Mexico (4.3 million immigrants), the Philippines (783,000), China (681,000), Vietnam (457,000), and El Salvador (413,000). Public Policy Institute of California

13 Does California have adequate water for 38million people?
Yes No Have not made up my mind yet

14 Does California have enough water for 48 million people?
Yes No Have not made up my mind


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