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Finally, I heard about SteriPen, a small device that takes a grand total of 90 seconds to purify water. This miniature light saber, as I began to think of it, weighs next to nothing, fits easily inside a shoe (with room leftover to pack a couple socks) and uses the same process to kill bacteria as several big cities in America. Ultraviolet light zaps unwanted viruses and other cooties that lurk in untreated water. You simply push a button, stick the flashlight-sized device in your water bottle and stir it around for a long minute. Voila! All the nasties are gone and the water is safe to drink.

View the feature at Huffington Post.

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