Which Organic Solvent Is the Primary Ingredient in Nail Polish Remover?
Briefly

Ray Hamel presents daily quizzes that challenge participants on unique topics, enabling them to compare scores with others and fostering a competitive environment among friends.
The science quiz engages players by allowing them to see their performance against the average contestant, enhancing the experience and encouraging sharing of results for further competition.
Read at Slate Magazine
[
|
]