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News from all fields of science for students from middle school and up
One-hour tutorials in over 45 languages. No experience needed.
Enter a book you like and the site will analyze a huge database of real readers’ favorite books to provide recommendations and suggestions
Test your knowledge with amazing and interesting facts, trivia, quizzes, and brain teaser games.
Devoted to spreading ideas, usually in the form of short, powerful talks.
Videos that feed the curious and illuminate the amazing.