Tokyo 2020 shows off Olympic medals made from old phones

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Tokyo 2020 shows off Olympic medals made from old phones

Japan’s Tokyo 2020 has unveiled its Olympic medals made from recycled mobile phones. The Tokyo Organizing Committee of the Olympic and Paralympic Games said its Tokyo 2020 Medal Project sourced small electronic devices from all over Japan to create 5,000 gold, silver and bronze medals.
Tokyo 2020 had first announced it would be making its medals out of recycled electronics way back in February 2017, asking the public to donate its old or unwanted phones. Gold, silver and bronze were extracted from the phones, with the same method used in the Vancouver 2010 Olympic and Paralympic Winter Games.
“We hope that our project to recycle small consumer electronics and our efforts to contribute to an environmentally friendly and sustainable society will become a legacy of the Tokyo 2020 Games,” Tokyo 2020 said.
The medals symbolize the energy of athletes, as well as the diversity of the games, Tokyo 2020 said, while their brilliant “signifies the warm glow of friendship.”
The design of the medals also represents Japanese culture, with the ribbon showing off modernized ichimatsu moyo (checkered patterns) and kasane no irome (kimono layering techniques). The Tokyo 2020 colors are added to the ribbon through more co2-friendly chemically-recycled polyester fibers.
The medal cases are being created by Japanese craftworkers “with a blend of traditional and modern techniques.”
In another effort to infuse its culture into the Tokyo 2020 Olympic and Paralympic Games, Japanese artists are also re-creating flags of countries participating in the event as anime characters, though the project is not officially affiliated with the games.

The Smallest Computer in the World Fits On a Grain of Rice

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Researchers at the University of Michigan just created the world’s smallest computer (again). Their previous micro-computer, the Michigan Micro Mote, measured 2x2x4mm. It was a complete, functioning system powered by solar cell batteries. But in March this year, IBM announced a new, smaller computer, which measured 1×1 mm, and was smaller than a grain of salt. It “raised a few eyebrows at the University of Michigan.”
After all, it’s unclear if the IBM computer even count as an actual microcomputer. The IBM device lost all its programming and data as soon as it turns off, unlike the Michigan Micro Mote, which retained its programming even when it wasn’t externally powered. “It’s more of a matter of opinion whether they have the minimum functionality required,” said David Blaauw, a professor of electrical and computer engineering at University of Michigan who helped develop the University of Michigan’s newest tiny device. If the IBM machine constituted a computer, then University of Michigan would work to gain back their title: their latest microdevice measures 0.3mm per side (1/10th the size of IBM’s computer), and is smaller than a grain of rice.
The device was designed to be a precision temperature sensor that can report temperatures in clusters of cells with an error of about 0.1 degrees Celsius. “When we first made our millimeter system, we actually didn’t know exactly all the things it would be useful for. But once we published it, we started receiving dozens and dozens and dozens of inquiries,” Blaauw said. It could, for instance, measure the temperature of tumors and conduct other cancer studies, monitor oil reservoirs, conduct audio or visual surveillance, or help in “tiny snail studies.”

Anti-Solar Cells Could Keep the Power Going at Night

Panel, Solar, Power, Energy, Environment

Anti-Solar Cells Could Keep the Power Going at Night



Solar panels that work at night? The idea isn’t as far-fetched as it might seem.

A University of California (UC), Davis engineering professor is developing prototypes of an “anti-solar” cell that would work in the opposite way from a typical solar panel. Instead of being cooler than the air and absorbing sunlight, it would be warmer than the air and give off infrared light.

“A regular solar cell generates power by absorbing sunlight, which causes a voltage to appear across the device and for current to flow,” the professor, Jeremy Munday, explained in a UC Davis press release. “In these new devices, light is instead emitted and the current and voltage go in the opposite direction, but you still generate power. You have to use different materials, but the physics is the same.”

Solar Panel Array, Power, Sun




While this might sound high tech, Euronews explained that the principle behind it has been used to cool homes at night for centuries:

You are using the same theory when you open your windows and doors after a hot day to cool down your house. Essentially this form of passive cooling uses the night sky as a massive heat sink, drawing warmth away from the earth once it gets dark.
Munday, who published a concept paper of his idea in the January 2020 issue of ACS Photonics, said that his device could generate around a quarter of the energy a traditional solar panel can during the day — that’s up to 50 watts of power per square meter. While less powerful, his device can be used at any time.


Solar Cell, Solar Panel, Photovoltaic

Solar cells are limited in that they can only work during the day, whereas these devices can work 24/7, which is the real advantage,” Munday told CNN. “Nobody wants to lose power once the sun sets.”

His “thermoradiative cell” would also work during the day if it were pointed away from the sun or otherwise blocked from direct sunlight, the press release explained.

Munday told CNN that the device could be used to achieve carbon neutrality, because it could run on waste heat generated by industry.

“While these panels can produce carbon-free power […] when attached to waste heat sources, they can also produce carbon-free power by just sitting on your roof, like a solar panel,” he said.

Munday is working on prototypes of these cells with the hopes of improving their efficiency and the amount of power they can generate, according to the press release. However, he acknowledged to CNN that traditional solar panels have “decades of development” on his idea.
Munday isn’t the only researcher to seek to generate renewable energy from the heat difference between Earth and space. In May of 2019, a team of international researchers announced that it was possible to generate electricity by pointing an infrared semiconductor at the sky.

“The vastness of the universe is a thermodynamic resource,” paper author Shanhui Fan said in an American Institute of Physics press release published by EurekAlert! at the time.

Why use a bamboo toothbrush?


plastic toothbrush versus bamboo toothbrushes


THE PLASTIC PROBLEM

plastic toothbrushes ocean pollution
You already know that plastic toothbrushes account for a global waste problem. Plastic is cheap, versatile and valuable resource in many ways. However, it has created a disposable lifestyle. 50% of plastic is just used once and thrown away.
 Plastic pollution is an unsustainable waste of that resource and it has become an environmental issue. So basically, do you want to continue being part of the problem or are you ready to take a small step to reduce our collective plastic footprint?
Plastic toothbrushes are made from polypropylene plastic (handle) and nylon (bristles), which are both sourced from non-renewable fossil fuels. They are essentially indestructible, which means that the first toothbrush we had when we were kids is still hanging around in some form, somewhere polluting Mother Earth.
Every year billions of plastic toothbrushes are thrown away. They are dumped into our oceans or end up in landfills, where they sit around for about 1000 years before finally breaking down.

Another staggering fact is that by 2050, the oceans will contain more plastic than fish by weightQuite scary, don’t you think? But the environmental damage is entirely preventable, if we take a small and simple action: switch to a biodegradable toothbrush.

This is bad news for three notable reasons—sourcing, toxicity and disposal.
  • Let’s begin with sourcing. Plastic toothbrushes are are no different to the majority of other plastic items; oil-derived. Oil is an increasingly scarce resource that is highly polluting in its extraction, processing and disposal of the waste material.
  • The bad news continues—most users of plastic toothbrushes are unaware of the toxicity hidden inside the product they use on a daily (hopefully twice a day), basis. Many brushes leach toxins such as BPA and phthalates which are linked to health problems including reproductive issues and cancer. 
  • The final issue with plastic toothbrushes comes to when its time to replace them. The vast majority of toothbrushes are not recyclable due to the mix of materials used in their manufacture, and the contaminated plastic in the bristles. As a result, most toothbrushes will end up in a landfill or worse, our seas, where over time they break up turning into microplastics (which we will be covering in a future blog post) —tiny but very harmful pieces of plastic that can kill marine life and even make their way into our food chain and drinking water.
Suddenly an innocuous, everyday item like a plastic toothbrush doesn’t seem so innocent as we think about the repercussions of using them instead of a sustainably-sourced, biodegradable, toxin-free, environmentally less hazardous, alternative. 
So what’s the answer? Drumroll please for the bamboo toothbrush. This unsung hero could be doing more for the environment than you think.
Bamboo is the fastest growing plant on earth (up to 3 metres a day for some species). This is an important characteristic as it makes bamboo a highly renewable and super sustainable crop, meaning a small patch of ground can repeatedly be harvested producing enormous amounts of raw materials.
Bamboo can also be cultivated without the use of pesticides or fertilisers which often contain highly toxic chemicals, and to top it off bamboo produces more oxygen and absorbs more carbon dioxide than any other plant.
Sounds like a great alternative to toxic and non-renewable, oil-based plastics!
What about disposal?
       Bamboo is biodegradable and can be safely returned to the soil via your compost heap or your local authority’s green waste without fear of leaching toxic chemicals into the environment (provided there’s no toxic paint on the handles).
This leaves only one thing, the elephant in the room, the bristles.
Traditionally toothbrush bristles are made from Nylon which is durable and flexible and provides a good source of abrasion, making it an ideal candidate for brushing your teeth, but it’s not so great for the environment.
The manufacturing process for Nylon is a substantial source of greenhouse gas emissions and the single most significant source of plastic-pollution in our oceans.
Many companies that produce bamboo toothbrushes will neglect to tell you their bristles are  Nylon, which can add complexity to their disposal and undermine the efforts of customers trying to live plastic-free.
A common biodegradable alternative is the traditional hogs hair bristle. This is, in my opinion, fairly gross and probably a non-starter as other options go—not only can it be seen as a cruel practice to pluck the hair off a hog’s body to make bristles, it’s also unhygienic as hog’s hairs are hollow and as such are a refuge for bacteria.
plastic toothbrush versus bamboo toothbrushes

If you’re interested, you can find our toothbrush on Amazon at the Link below.