Massachusetts Institute of Technology engineers have developed a robot that plays Jenga using technology they say could be used to assemble consumer products or separate recycling.
Scientists in Australia think hardy agave plants could be the next big biofuel source. In addition, the bioethanol produced from the plants could help fill unprecedented global demand for hand sanitizer.
The President says we are at war with the coronavirus. It’s a war we should fight to win.
The economy is in the tank, and anywhere from thousands to more than a million American lives are in jeopardy. Most analyses of options and trade-offs assume that both the pandemic and the economic setback must play out over a period of many months for the pandemic and even longer for economic recovery. However, as the economists would say, there is a dominant option, one that simultaneously limits fatalities and gets the economy cranking again in a sustainable way.
That choice begins with a forceful, focused campaign to eradicate Covid-19 in the United States. The aim is not to flatten the curve; the goal is to crush the curve. China did this in Wuhan. We can do it across this country in 10 weeks.
Solar power on electric cars has yet to become a common feature, but Tesla is about to change that — starting with the Cybertruck electric pickup.
We’ve discussed solar roofs on electric vehicles before, most recently with the one on the latest Prius Prime, but the recurring problem is that they rarely generate enough power to be worth it.
A Redwood City, California-based tech startup has developed a glass window packed with transparent photovoltaic cells that it believes will revolutionize the way solar energy is harnessed.
As companies around the world are increasingly working to expand and improve upon renewable energy resources, solar-energy based companies have been working to extract more energy from ever-smaller solar cells. Some resistance to the technology stemmed from the unsightly physical appearance of giant solar units placed on rooftops or vacant fields.
But Ubiquitous Energy Inc. has taken a different approach. Instead of joining competitors in trying to reduce the size of each solar cell, the company instead designed a solar panel of virtually clear glass that allows light to pass through unobstructed while tapping into the invisible ranges of the light spectrum.
The obvious drawback of solar panels is that they require sunlight to generate electricity. Some have observed that for a device on Earth facing space, which has a frigid temperature, the chilling outflow of energy from the device can be harvested using the same kind of optoelectronic physics we have used to harness solar energy. New work, in a recent issue of Applied Physics Letters, from AIP Publishing, looks to provide a potential path to generating electricity like solar cells but that can power electronics at night. For more information see the IDTechEx report on Energy Harvesting Microwatt to Megawatt 2019–2029.
An international team of scientists has demonstrated for the first time that it is possible to generate a measurable amount of electricity in a diode directly from the coldness of the universe. The infrared semiconductor device faces the sky and uses the temperature difference between Earth and space to produce the electricity.
“The vastness of the universe is a thermodynamic resource,” said Shanhui Fan, an author on the paper. “In terms of optoelectronic physics, there is really this very beautiful symmetry between harvesting incoming radiation and harvesting outgoing radiation.”
Circa 2016
Air pollution has a significant and pervasive impact on public health. According to the World Health Organization, it is now considered “the world’s largest single environmental health risk,” with more than three million people dying every year as a result. This is more than twice the number of people that die in vehicle accidents each year.
Health and safety are important to us. Just as we’ve designed Model S and Model X to avoid collisions or protect their occupants when one happens, we felt compelled to protect them against the statistically more relevant hazard of air pollution*. Inspired by the air filtration systems used in hospitals, clean rooms, and the space industry, we developed a HEPA filtration system capable of stripping the outside air of pollen, bacteria, and pollution before they enter the cabin and systematically scrubbing the air inside the cabin to eliminate any trace of these particles. The end result is a filtration system hundreds of times more efficient than standard automotive filters, capable of providing the driver and her passengers with the best possible cabin air quality no matter what is happening in the environment around them.
Continue reading “Putting the Tesla HEPA Filter and Bioweapon Defense Mode to the Test” »
Because running Tesla and SpaceX and building a new Starship every 72 hours so he can colonize Mars isn’t enough, now Elon Musk would really love to build an efficient and quiet HVAC system for home use, according to Inverse. It could even piggyback the existing work Tesla has done to make heaters for its newest vehicle, the Model Y.
The first few Tesla vehicles used an electric cabin heater to replace a traditional fuel vehicle’s reliance on internal combustion engine heat. Trying to find the right kind of heater has been challenging at times for Tesla, which was faced with reinventing the wheel, so to speak. Before now, engines made the heat as a secondary effect of combustion.
Scientists unearth ancient Papua New Guinea artifacts in the highlands of the island that settle a longstanding archaeological argument regarding the emergence of complex culture on the island.
About 10,000 years ago, the climate changed to better suit the planting of crops and the Neolithic revolution that brought about agriculture emerged in different parts of the world at different times. In Europe and Asia it is known that at this time cultural complexity developed as people began settling and living together on farms.
Continue reading “5000-Year-Old Papua New Guinea Artifacts Rewrite Neolithic History” »
Terahertz (THz) waves fall between microwave and infrared radiation in the electromagnetic spectrum, oscillating at frequencies of between 100 billion and 30 trillion cycles per second. These waves are prized for their distinctive properties: they can penetrate paper, clothing, wood and walls, as well as detect air pollution. THz sources could revolutionize security and medical imaging systems. What’s more, their ability to carry vast quantities of data could hold the key to faster wireless communications.
THz waves are a type of non-ionizing radiation, meaning they pose no risk to human health. The technology is already used in some airports to scan passengers and detect dangerous objects and substances.
Despite holding great promise, THz waves are not widely used because they are costly and cumbersome to generate. But new technology developed by researchers at EPFL could change all that. The team at the Power and Wide-band-gap Electronics Research Laboratory (POWERlab), led by Prof. Elison Matioli, built a nanodevice that can generate extremely high-power signals in just a few picoseconds, or one trillionth of a second, which produces high-power THz waves.
