A strange foam has developed out of pig farm manure pits - and at least 6 farms have blown up because of the methane buildup.
What causes it? No one knows.
Friday, March 23, 2012
Explosive Manure
A strange foam has developed out of pig farm manure pits - and at least 6 farms have blown up because of the methane buildup.
What causes it? No one knows.
A Printer That Removes Ink
Scientists have created a printer which can, using lasers, remove ink off of previously printed paper - to be reused. Green laser passes through the paper's cellulose while vaporizing the ink.
Aside from never having to buy paper again, "unprinting" is a more "green" method than recycling which also uses more electricity, CO2 output, and fresh water.
