Note that different people have different research approaches. The two old ladies check that none of them can see herself and the problem is solved! ;-)
The other older lady makes an experiment with motion and rigorously determines that she is ... well ... unsichtbar. :-)
Material Made from Plastic Bottles Kills Drug-Resistant Fungus - IBM researchers have developed a new polymer-like material to treat fungal infections. A material made from plastic bottles can knockout a drug-resistant...
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