Colors of Earth
Episode 1Unknown - 2015
Dr. Helen Czerski seeks out the colors that turned planet earth multicolored. To investigate the essence of sunlight, Helen travels to California to visit the largest solar telescope in the world. She discovers how the most vivid blue is formed from sulphur atoms deep within the Earth's crust and why the presence of red ochre is a key sign of life. In gold, she discovers why this most precious of metals shouldn't even exist on the surface of the planet and in white, Helen travels to one of the hottest places on earth to explore the role salt and water played in shaping planet Earth.
Publisher: [Place of publication not identified] : BBC Worldwide Ltd, 
Copyright Date: ©2015
Characteristics: 1 online resource (1 video file (52 min., 31 sec.)) : sound, color video file,rda