Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.

Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.

Someseaurchins海胆havevenomous(toxin)spines

Peoplewhodonotsleepenoughtendtobecomeirritable.

Foodmustbemoistinordertohaveataste.