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Binchotan Charcoal: An Inexpensive Way To Mineralize and Filter Water

White charcoal or Binchō-tan is a charcoal that loves adsorbing things. Binchotan, which has been produced in Japan for centuries, naturally adsorbs toxins such as chlorine, lead, mercury, cadmium and copper from tap water. It also releases useful minerals like calcium, potassium, magnesium and phosphates. To use Binchotan, you simply place a piece of the […]

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The Best Flashlights For Retaining Night Vision

Aviators, astronomers, truck drivers, campers and anyone wanting to retain their night vision can benefit from LED flashlights with red or green light options. Which is best, green or red light? Well, it’s the total brightness of the light that has the most significant effect on night vision retention, so you’ll want a light that allows

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The Best Stereo Receiver Under $250: Harmon Kardon 3700

Harmon Kardon, founded in 1953, helped create the high-fidelity audio industry, and today the company continues to produce great audio gear. Featured here is Harmon Kardon’s 3700 receiver, which has a clean, minimalist design. Selling for about $310, this receiver is really a high-end device at a budget price. Like all Harman Kardon stereo and A/V receivers, it incorporates the company’s

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