Ray Hamel is hosting a daily quiz on a specific topic every weekday. The quizzes are challenging and will test your knowledge against other contestants. Slate Plus members can track their scores on the leaderboard, challenging their friends to see who comes out on top as the smartest. Today’s quiz topic is science, so put your best foot forward and try to beat the average score! Remember to read the rules before starting and make sure cookies are enabled in your browser for the quiz to function properly. Good luck on this challenging quiz!