In the early 1900’s, a Christmas tree that was lit with electric lights was a true sign of wealth – they were very expensive. Plus, you had to watch the tree carefully and it couldn’t be left on too long; those early light bulbs were extremely hot and exploded easily. If you didn’t have servants watching the tree, your house – or mansion – could go up in flames!
Forget solar power – we need firefly power! Fireflies produce light through eating food! (think about that for a second – gives donuts a whole new meaning, doesn’t it?) Plus, the light a firefly gives off is way more efficient than a light bulb. A firefly loses about 1/15 of its energy to heat, while a regular, ordinary light bulb wastes 95% of its heat energy!
The ancient Greeks were using solar power long before any of us discovered it. They positioned and built their houses to maximize the warmth from the sun!