I have heard that landfills can be a source of energy. How does that work?
Just like manure, other types of organic waste emit [...]
Why does the flame on my stove burners look blue, but the flame of a campfire is yellow?
A natural gas flame burns hotter than a campfire. In [...]
Are more homes heated by natural gas or electricity?
More homes in the U.S. are heated by natural gas [...]
What’s the difference between global warming and the greenhouse effect?
The greenhouse effect is created because certain gases sent into [...]
What kind of a difference does it really make to replace a regular light bulb with an energy-saving one?
Replacing your five most frequently used light fixtures or the [...]
Why didn’t Ben Franklin get electrocuted when he tied a metal key to a kite string and flew the kite in a thunderstorm?
Ben Franklin probably did not do his famous kite experiment [...]
When a circuit is open, do electrons go backwards, or do they just stop?
Neither! In the wires of an electrical circuit, the electrons [...]
How much energy is in a bolt of lightning?
One lightning strike can carry between 100 million and 1 [...]
Who discovered natural gas?
The ancient Chinese were the first to discover underground deposits [...]
Do electric eels really create electricity?
Yes! An electric eel uses chemicals in its body to [...]