Solar-powered light bulb is one Denver inventor's brilliant idea
By Jason Blevins
The Denver Post
Colorado native Stephen Katsaros wants his bulb to brighten up places without electricity.
When he was 7, Stephen Katsaros took apart the box fan in his bedroom and reassembled it using ...
State-owned power generating companies are dealing with high global energy prices that have cut their profits.
China has also banned the export of diesel, to try to meet domestic demand. Power cuts occur every summer, but this year rising coal costs and a drop in hydropower output mean they...
Solar-powered light bulb is one Denver inventor's brilliant idea
By Jason Blevins
The Denver Post
Colorado native Stephen Katsaros wants his bulb to brighten up places without electricity.
When he was 7, Stephen Katsaros took apart the box fan in his bedroom and reassembled it using ...
