Cactus goo for clean water
A cactus commonly found in Mexico can help clean up dirty water.
By Emily Sohn, 00:00 AM September 16, 2005
People need water to survive, and the water has to be clean—or they get very sick. Clean water, however, can be hard to come by.
Now, scientists are exploring a clever way to make dirty water clean for small communities in Mexico. The secret is the goo from an edible cactus found all over that country.
The nopal cactus, or prickly pear, could help Mexican communities purify drinking water.
Long ago, people in Latin America used prickly pear cactuses to filter their...
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