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TEXT 8

Cities in Space

Some predictions that were made in the 1950s were out of this world. Writers, scientists, and artists imagined whole cities in space. Some thought that by the early 1990s, Earthlings would live on the moon. Can you imagine sitting under a glass dome, watching Earth rise and set?

How would people grow fruits and vegetables in space? Simple. They'd use hydroponics, which was a well-known way to grow plants without soil. How would they heat their buildings? Energy from the sun would supply all their power.

These ideas weren't so crazy. Today, many homes on Earth use solar power. Some experimental cars and planes even run on sun power. Astronauts live for months on the International Space Station. Still, do you know anyone who lives on another planet? Probably not. Some people dream about living on Mars. However, the space city of people's imagination is still many years away.

Article by Terri L. Jones. Top-of-page illustration by Davis Meltzer. "Back to the Future" appears on page 18 of the April 2009 issue.

Available at: http://magma.nationalgeographic.com/ngexplorer/0904/articles/mainarticle.html. Accessed on Oct 30th 2011.

Fill in the text with the information in the text.

 

1. This text is a ___________________________.

 

2. Predictors imagined human beings living in ___________________________.

 

3. When you predict the future you say what ___________________________.

 

4. In 1950 scientists predicted what could happen to ___________________________.

 

5. Earthlings are people who live on ___________________________.

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