Bill Nye The Science Guy 4 20 -1 -1 251074 0.0 0.0 0 Time affects every living thing on Earth. Trees shed their leaves. Some animals only come out at night. There are even insects that only emerge every 17 years. Days, hours, minutes, and seconds – all of these were invented by humans. Humans came up with these units of time to organize their lives and to study the world. One of the first ways humans told time was by noticing the difference between daytime and nighttime. Humans use the Earth revolving around the Sun to divide time into years and seasons. Months are based on the movement of the Moon around the Earth. A day is when the Earth spins completely around its own axis. 26 http://image.tmdb.org/t/p/original/oDIJvvZpEpecmwiMyRM2d90Md6L.jpg 1997-09-12 1997-09-12 false Rabbit Ears Productions Public Broadcasting Service KCTS Television James McKenna Bill Nye Michael Gross Kit Boss Erren Gottlieb Ian G. Saunders Adam Gross Seth Gross Simon Griffith Scott Schaefer Darrel Suto Michael Palleschi Lynn Brunelle Toby Lawless Family Magician https://www.themoviedb.org/person/1234124 2020-08-23 13:00:58 UNKNOWN BNTSG S04E20 Time.avi