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The Best Computer Under $500

Compaq CQ4010F PC

Here is some helpful information to find the best computer under $500. The average price of a personal computer is somewhere in the neighborhood of $1300, according to CNET.com. That’s a rather hefty chunk of change, especially if you’re a recent high school or college graduate and don’t have a sizable bank account (who does […]

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New Record: World’s Largest Wind Turbine (7+ Megawatts)

The world’s largest wind turbine is now the Enercon E-126. This turbine has a rotor diameter of 126 meters (413 feet). The E-126 is a more sophisticated version of the E-112, formerly the world’s largest wind turbine and rated at 6 megawatts. This new turbine is officially rated at 6 megawatts too, but will most […]

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Skyscraper Creates All Its Own Energy

This skyscraper, to be built in Dubai, is called the Burj al-Taqa (‘Energy Tower’), and it will produce 100% of its own power. The tower will have a huge (197 foot diameter) wind turbine on its roof, and arrays of solar cells that will total 161,459 square feet in size. Additional energy is provided by […]

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The Best LED Flashlights Of 2014

flashlite-nitecore-tm15-battery-4x

In A Nutshell Here are the best LED flashlights of 2014: The best the keyring-size LED flashlight: Fenix LD01 — 80 lumens — costs around $40 The best standard-size LED flashlight: Fenix TK11 R5 — 225 lumens – costs around $75 The brightest LED flashlight that runs on AA batteries: Fenix TK-41 U2  860 lumens […]

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Electric Tankless Water Heaters

Note: This post has been expanded and updated for 2009! Tankless water heaters only heat water when it is needed. About 8% to 30% of the energy consumed by a standard water heater goes to keeping the water hot while it’s not being used. New tankless systems heat the water instantly when you turn on […]

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