Maximize a Fridge’s Efficiency by Letting Leftovers Cool Before Storing

Our refrigerators are constantly at work keeping our food cold and safe to eat, but we rarely give them much love back. To keep your refrigerator functioning optimally, consider these seven tips, which can also help you save money on your electricity bill and avoid unexpected repair costs.

Source: 7 Tips for Keeping Your Refrigerator Running Efficiently

For some things, I’d recommend not just letting it cool, but actually expediting cooling. When I cook stocks, stews and other things that will retain a lot of heat, I’ll empty my ice maker into the sink, fill with water, and put the pot in it to cool faster (actually, I vacuum seal portions, then immerse the bags, but I’m probably unusual in that respect). I believe this is SOP for restaurants with stock, which can actually take long enough to cool that nasties can grow in it even if it goes from stove to fridge, with or without “room temperature” cooling in between…

The FDA recommends you don’t let food sit out any longer than two hours or so.

Researchers Have Made Socks That Use Urine to Create Electricity

Your urine may be of more use kept about your person. At least, that’s what a team of researchers from the University of the West of England think, because they’ve made a pair of socks that use the liquid to generate electricity.

Source: Researchers Have Made Socks That Use Urine to Create Electricity

The first I remember to suggest such technology was the stillsuit in Dune.  Which brings up the point that this could be beneficial for travel in places such as space.  Electricity doesn’t do much good in the desert 😉

…and wearable charging technology has been talked about for a while, with respect to supporting our cellphone/mobile and such.

Harvest Energy From Your Jaw as You Snack/Talk

Are you sick and tired of wasting potentially tens of calories suboptimally chewing? If so, a pair of researchers from Montreal, Aidin Delnavaz and Jérémie Voix, have a solution: the piezoelectric chin-strap.

All you have to do is chew and talk and grind your jaw as per your usual doses of coffee and 5-Hour Energy, and the device provides tiny bits of juice that might be used to power hearing aids, wearable electronics, or some so-far unrealized implantable device of the cyborg future. And if you’re already a cyborg, why not just go for it, eh?

Source: Sure, a Chin Strap That Harvests Energy from Chewing

I think riding a bike to generate electricity would produce more, and be better exercise.