Flow batteries are a unique kind of battery — they have tanks that hold hundreds of gallons of the chemicals, called electrolytes. Flow batteries just happen to be very good at storing solar or wind power. Renewable power sources suffer from being intermittent, and less reliable for continuous power supply than coal or gas. Neither… [Continue Reading]
Here’s something that allows you to get traction on snow or ice while wearing your regular shoes. These Yaktrax grips are essentially a thick rubber bands, equipped with steel coils, that fit over the sole of your shoes. Apparently the idea was borrowed from the Tibetans. Priced around $20 per pair, available from Amazon.
These reuseable, non-toxic ice packs are unlike the gel-based packs you may have used. Most ice packs on the market today contain urea, a waste byproduct. Instead these packs use a super-absorbant material instead. You can cut them to any configuration you need, soak them in water for a few minutes and freeze. The packs… [Continue Reading]