Remember the cycle of water they used to teach us in 5th grade? The water would run off from the mountains and settle in the seas and the oceans. Then it would evaporate because of the sun’s heat and turn into clouds. Rain would fall down and the cycle would start all over again. Now it sounds simple and logical, although back then it seemed so complicated, especially with all those scientific names and codes. But there’s nothing better at reminding us of them than these new icons.