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A Moment of Science

Posts tagged cities

September 8, 2011

 

Alien yard art

Using Oxygen To Search For Alien Planets

If you could see an alien planet from Earth, you wouldn't necessarily need to look for cities. You could just check for oxygen in the atmosphere.

February 9, 2004

 

Pollution on the Go

Pollution in cities is pretty much an accepted thing, but what about pollution in the country? Learn about pollution on this Moment of Science.

September 27, 2003

 

Light Pollution

To really behold the stars these days, you have to travel far from cities and towns to escape urban glow. The magnificent sight of the Milky Way, for example, can now only be seen in rural areas. But why do we shine light up into the sky in the first place? We need light shining down on streets and walkways–not up into the sky!

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