In the beginning… I occasionally begin conference presentations or lectures with a brief look at the historic importance of light to our ancestors. I might mention ancient Egyptian worship of the sun-god Ra, tell stories of Helios riding his chariot into the sky to start the day as a Greek Titan, or quoting “God is... Continue Reading →
THINK LIGHT: Light Pollution
Satellite image from NASA via Blue Marble. Can you find your town? When it comes to light, it is hard to tell exactly how much we throw away. The International Dark Sky Association estimates that 35% of lighting energy is wasted making the sky glow. This is energy that has no discernible positive effect on... Continue Reading →