An inexpensive new material made of clay and papaya seeds removes harmful metals from water and could lower the cost of providing clean water to millions of people in the developing world, scientists are reporting. Their study on this "hybrid clay" appears in the journal ACS Sustainable...
concerning the "day of purification"? What is going to be purified? How do you see it making a difference in our state of affairs? Do you see any connection between this and Christianity?
A team of Penn State University scientists has invented a new system that uses magnetism to purify hybrid nanoparticles - structures that are composed of two or more kinds of materials in an extremely small particle that is visible only with an electron microscope...
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