dangerously acidic chemicals have to be labeled when the pH is 2.4 or less because Coca Cola is pH 2.5?

a box of paper (20 reams) is about half a tree?

Dr Pepper does not have a period?

the largest obelisk in Rome, which stands in front of St. Peter’s basilica was moved by a Roman ship nearly the size of an aircraft carrier?

obelisks represent the rays of the sun and its power?

the leaf in your table is so named because of interleaving books?

Darwin rode tortoises while on the Galapagos islands? He also pushed a hawk off a branch with the butt of his gun.

there is a cone can have a limited volume but infinite surface area? Apparently known as Gabriel’s Horn or Torricelli’s Trumpet.