#39-Dr Serena McCalla: Star of Nat Geo's Science Fair is Helping Shape Young Scientific Minds from top films last 20 Watch Video
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⏲ Duration: 26 min 59 sec ✓ Published: 19-Mar-2019
Description: It’s the most critical day of this grueling international competition -- 1700 brilliant young minds are gathered to claim the top prize -- but they have just a few minutes to sell their idea to judges.nnBarred from the room during the highly charged pitch sessions, Dr. Serena McCalla is here to represent one of best teams in the world. In this ultra-competitive scene having one or two students competing is unbelievable. This famous science teacher has a staggering nine. The stakes are high thi
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