Showing posts with label World's population. Show all posts
Showing posts with label World's population. Show all posts

Friday, March 30, 2012

7 Billion




Our class watched a video made by National Geographic about our population hitting 7 billion. These are some of the things I learned.

7 billion people

•It would take 200 years to count to 7 billion out loud.
•7 billion steps would take you around the globe 133 times.
•In 1800 the world’s population was only 1 billion.
•In 1930 the world’s population was 2 billion.
•In 1960 the population was 3 billion.
•In 1974 the population was 4 billion.
•In 1987 the population was 5 billion.
•In 1999 the population was 6 billion.
• Now in 2011 the population is 7 billion.
•In 2045 the population could be 9 billion.
•Every second 5 people are born and 2 people die.
•In one minute our population has increased by 161 people.
•In 2010 the average lifespan was 69 years old.
•In 1960 the average person only lived to be 53 years old.
•For the first time ever in 2008 more of us lived in cities than rural areas.
•A Mega-city has a population of over 10 million. In 1975 there were 3 mega-cities; Mexico City, Tokyo, and New York City.
•Right now there are 21 mega-cities.
•By 2050 70% of us will live in urban areas.
•But we don’t take up as much space as you think, we could all fit shoulder to shoulder in the city of Los Angeles.
•So it’s not space we need, it’s balance.
• 5% of us consume 23% of the world’s energy.
•13% of us don’t have clean drinking water.
•38% of us lack adequate sanitation.
•7 billion people speaking more than 7,000 languages.
•7 billion people living in 195 countries.

by Max B.