Category Archives: Energy

The Next Big Green Thing: LED Lighting

Buckingham Palace is doing it and so are US cities like Ann Arbor and Raleigh. All these cities are installing LED lighting, that is. The New York Times article “Green Promise Seen in Switch to LED Lighting” and a blog post from the Times website discuss the potential benefits and some downfalls of LED lighting. [...]
Also posted in Electricity | Tagged , , | Comments closed

How much oil do we use? (4/5)

Now that we’ve covered where oil comes from, what oil is chemically, and how we refine crude, it’s time to get to the heart of the oil hype – consumption. The cool flow diagram below shows where the USA gets oil from and where we use it. From this diagram we can learn quite a [...]
Also posted in Oil & Crude | Tagged , | Comments closed

CFLs and Mercury

There’s been a lot of backlash to the CFL (Compact Fluorescent Lamp) movement recently. Why? Mercury. CFLs contain small amounts of mercury. When these bulbs  reach the end of their lives (on average 5 or more years – 10 times that of incandescent bulbs), they usually end up in the trash. On the way to [...]
Also posted in Electricity | Tagged , , | Comments closed

How do we make gasoline and other useful fuels? (3/5)

In the last article in the series on crude oil, we learned where oil comes from. In this edition, we’ll discuss how fuels, lubricants, and other petroleum products are made from oil. After oil is extracted from the earth, it is separated into different components roughly according to how big the molecules are. Differences in [...]
Posted in Energy | Comments closed

Where Does Oil Come From? (2/5)

We just learned what hydrocarbons are, we want to know where they come from. This article continues the series on Crude Oil. Organic material, like algae and zooplankton, that have died millions of year ago and sank to the bottom of the ocean were slowly buried by silt and other organic material to form layers. [...]
Posted in Energy | Tagged , | Comments closed