Batteries Powered by Vibrations

A printer company has developed a prototype battery powered from quick vibrations that can power low-intestity electronics like remote controls. This is a good development in battery technology because it shows what’s possible and may entice companies to start selling batteries that are powered by a simple shake.

The idea behind the technology is to remove the need for toxic rechargeable batteries and other disposable batteries that can harm the environment, said the company.

So far, two of the AA sized prototypes developed produce a voltage of 3.2V or lower, which is just enough to charge low power consumption device such as TV remote controls.

Despite the low power, Carl Telford an analyst at electronics business consultants Strategic Business Insights, says the batteries are a significant break through with much potential.

“It’s great because they will work OK in a low-power application for AA batteries that one can shake without breaking; a remote control, for example,” he told BBC News.

“Of its size, it is small, compact, and directly compatible with existing power sources. Brother says that it can produce enough power at reasonably low frequencies, around 4-8Hz – this is impressive.

Keep reading at the BBC.

Vaginal Gel Cuts HIV Infections by Half

The International Aids Conference is currently underway in Vienna right now and some exciting news has been announced there. A new vaginal gel containing an AIDs drug is excellent at curtailing HIV infections.

The gel was found to be both safe and acceptable when used once in the 12 hours before sex and once in the 12 hours after sex by women aged 18 to 40 years.

Salim Abdool Karim, one of the two leading co-researchers, told reporters in Vienna that the 889 women involved in the trial, conducted in the coastal city of Durban and a remote rural village, had largely used the gel as directed.

They were also given condoms and advice about sexually transmitted diseases, and tested for HIV once a month.

After 30 months, 98 women became infected with HIV – 38 in the group that got tenofovir in the gel and 60 in the group that got placebos.

Google Picks Up the Tab for Inequality

The New York Times is reporting that Google is going to start compensating its gay/lesbian employees in same-sex partnerships, for the tax charged on their partner’s employer health benefits; a tax which heterosexual married couples are exempt from. It’s a little thing, but it’s nice to see a corporation do something to right an injustice that has nothing to do with their bottom line.

So Google is essentially going to cover those costs, putting same-sex couples on an even footing with heterosexual employees whose spouses and families receive health benefits.

The company began to look at the disparity after a gay employee pointed it out, said Laszlo Bock, Google’s vice president for people operations (also known as human resources). Google, by the way, says its benefits team seriously considers any suggestions on how to expand its coverage. “We said, ‘You’re right, that doesn’t seem fair,’ so we looked into it,” Mr. Bock said.

Read the whole article at the New York Times

Green Ways to Stay Cool in Summer Heat

The summertime can get insanely hot and it’s very tempting to turn the air conditioning on full blast – don’t. Air conditioning is notoriously bad for the environment due to the ridiculous amount of energy they consume to cool a building.

There are many other ways to stay cool over the summer that require a heck of a lot less energy.

1. Close your windows
It may seem counter-intuitive, but opening the windows will often make your home warmer, not cooler. Open your windows at night if the air outside is cooler than inside, and close them — along with blinds and shades — before the sun hits your house in the morning. This will allow cool night air to circulate, and prevent a good deal of the sun’s heat from infiltrating your living space.

You may also put houseplants — particularly larger potted trees — in front of sunny windows to absorb some of the sun’s energy. Use this method, and on all but the summer’s hottest days, you can get away without using the air conditioning at all!

2. Use fans strategically
Ceiling fans and those set right in front of you are there to keep you cool, not cool the room. But a fan in your face can help you feel dramatically cooler, even if the room temperature hardly budges. You should be able to set your air conditioner higher, at about 78 degrees, but feel much cooler by using a fan.

Enhance its effect by wetting your skin with a spray bottle, and get a near-instant cooling effect by wetting your wrists and letting the fan blow air across them.

Fans can help cool your home, particularly when used to blow cooler air indoors, usually at night. You can maximize the effect by creating a wind tunnel of sorts, with a fan blowing cool air in on one end of the house, and another blowing out on the opposite side of the house.

3. Adjust the thermostat
If you have central air controlled by a thermostat, program it to save energy by increasing the heat significantly during the day when the house is empty, and give up a couple degrees at night, too — especially on the hottest days.

You may be surprised to find that the contrast between outdoor and indoor temperatures matters as much as the absolute temperature inside your home.

Keep reading at Yahoo Green.

Town Bans Bottled Water

In what is probably a first for our planet, a small town in Australia has banned the selling of bottled water. This is absolutely fantastic to see because bottle water is an asinine idea for the developed world. Most bottled water comes form the same source as municipal tap water then shipped around via fuel-burning vehicles.
Bottle water is a fantastic model of inefficiency so it’s good to see this news coming out of Australia

“Every bottle today was taken off the shelf and out of the fridges so you can only now buy refillable bottles in shops in Bundanoon,” Dee told AFP.

The tiny town, two hours south of Sydney, voted in July to ban bottled water after a drinks company moved to tap into a local aquifer for its bottled water business.

“In the process of the campaign against that the local people became educated about the environmental impact of bottled water,” said Dee.

“A local retailer came up with this idea of well why don’t we do something about that and actually stop selling the bottled water and it got a favourable reaction,” he said.

Dee said the 2,000-person town had made international headlines with their bid, which he hoped would spur communities across the world to action.

Keep reading.

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