All the refrigerator does is move heat, or energy, from one place to another. As the food inside the refrigerator loses its heat and gets colder.
Renewable energy sources are cleaner and more environmentally friendly than fossil fuels. But you can't store wind or sun like you can oil or coal. Or can you?
We need cleaner, more sustainable sources of energy, right?
Natural gas, drilling, and fraking. Do you know what fraking is?
Why doesn't the flame just continue to burn underneath the bell, no matter how flat you crush it? The answer is air.
There are some balls that are specifically designed not to bounce. The question is, how do these so-called 'dead balls' not bounce?
Scientists found a more eco-friendly way to make bricks -- with wool!
What is the distinctive sound of the ocean hitting the sand: Woooosh!
A smarter electricity grid will help cut your energy bill and prevent blackouts in the summer heat.
How does fire pass from one burning stick to another unlit stick?