Street vendors dispense the party fuel for Rio’s Carnival, but face pushback as their numbers grow
Sweat streamed down Talita Ferreira Sanches’ face as she pushed a cart loaded with beer and water up the winding, cobblestone ...
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Meet the Teen Who Can Add 100 Numbers in 30 Second and Broke 6 Guinness World Records for Mental Math
If I asked you to multiply 51,689 by 89,542 without using your phone or calculator, how much time would it take you? Fourteen ...