Environmental Science

The environment is truly a thing of beauty and should be protected whenever possible. What can we do to save the environment, and what new technology is available to help us?

Topics to Explore

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What is an oscilloscope used to measure?

An oscilloscope measures the voltage and frequency of an electric signal. A machine uses "sweeps" and and an input signal. See how it all comes together.

How do they measure sea level?

How do they measure "sea level"? Is it the average of the tides? And is the sea level actually rising or not?

How do the streetlights turn on automatically at night?

On the Flintstones, a small bird sits inside the light and turns it on every night before he goes to bed. In a modern streetlight, a small circuit replaces the bird.

Inside a Power-Cube Transformer

You've probably never noticed how many of these you use everyday, but HowStuffWorks took the time to count them and take them apart to see what's inside!

How Moissanite Jewels Work

Diamonds are beautiful and popular - but not everyone can afford these gems. While man-made versions are less expensive, most lack the luster and brilliance of the real thing, except moissanite. See how it compares!

How Power Grids Work

Electrical power is a little bit like the air you breathe: You don't really think about it until it is missing. There are good reasons the power grid distribution system works the way it does, though it can lead to some big problems.

How Solar Cells Work

You've probably seen solar cells on calculators, call boxes, road signs, homes and businesses. But how do solar cells work?

How The Nature Conservancy Works

A fascinating article that describes the work of The Nature Conservancy and the benefits of its conservation projects to our environment and ecology!

Why is water vital to life?

Do you ever play that game in which you select the items you'd bring if you got stuck on a desert island? Along with that treasured bootleg recording of your favorite band, we think that an endless supply of water should be at the top of your list. Here's why.


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