While known as a painter, sculptor, architect, and engineer, Leonardo da Vinci was the first to record that the number of rings in the cross section of a tree trunk revealed its age. He also discovered that the width between the rings indicated the annual moisture. -- A plant in central Australia, the candlesticks of the sun, grows a candle-shaped flower once every 7 years. - The woman's tongue of Zanzibar is a plant with pods full of seeds which rattle continuously. -- The Siberian larch accounts for more than 20% of all the worlds trees. ****** HAVE A GREAT DAY, AND REMEMBER, DAILY JOKES ARE ON MY PAGE, STOP BY FOR A SMILE.