Small levitating platforms that can stay airborne indefinitely at very high altitudes have been developed by researchers in the US and Brazil. Using photophoresis, the devices could be adapted to ...

When Riley Cote laced up his skates for the Philadelphia Flyers in the 2000s, he carried the weight of an identity that stretched back decades: toughness. The Flyers, once notorious as the “Broad ...

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Complete Persian : modern Persian/Farsi Publication date 2010 Topics Persian language -- Self-instruction, Persian language -- Textbooks for foreign speakers -- English, Persian language -- Sound ...