by Diana Filer
4. The most popular poker game is Texas Hold’em.
5. The world’s strongest and most indestructible substance is graphene, a 2 dimensional carbon atom (the first known), 300 times stronger than steel. It is used to enhance the strength of other materials.
Editor’s note
We inadvertently published the answers the same day as the questions. Our apologies to our readers and to Diana Filer.