Showing posts with label air pollution. Show all posts
Showing posts with label air pollution. Show all posts
Tuesday, June 29, 2010
Wednesday, April 15, 2009
Attack of the Radioactive Lava Monster
"Recently, scientists invented a new kind of cement, one that can clean the air. This cement is going to become the normal cement we use. If we used this new kind of cement, it could solve our air pollution problems. It not only cleans the air, it's also stronger and lasts longer."
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