Lifeboat Foundation

Photovoltaic cells work best when sunlight is incident directly on them. To make the most of sunlight available during the day, scientists have relied on solar tracking to move panels in sync with the Sun as its travels across the sky. However, installing these systems increases the cost of deploying solar panels, which is a significant obstacle to their wide-scale adoption.

You may have stumbled across the Flipper Zero hacking device that’s been doing the rounds. The company, which started in Russia in 2020, left the country at the start of the war and moved on since then. It claims it no longer has ties to Russia and that it is on track to sell $80 million worth of its products this year after selling almost $5 million worth as Kickstarter preorders — and it claims it sold $25 million worth of the devices last year.

So what are they selling? Flipper Zero is a “portable gamified multi-tool” aimed at everyone with an interest in cybersecurity, whether as a penetration tester, curious nerd or student — or with more nefarious purposes. The tool includes a bunch of ways to manipulate the world around you, including wireless devices (think garage openers), RFID card systems, remote keyless systems, key fobs, entry to barriers, etc. Basically, you can program it to emulate a bunch of different lock systems.

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In a 1931 essay, Winston Churchill wrote about how he sees the future of food production: “We shall escape the absurdity of growing a whole chicken in order to eat the breast or wing, by growing these parts separately under a suitable medium,” he wrote.

Fast forward some 90 years, and Churchill’s prediction is coming true, thanks in part to Israeli food-tech company Aleph Farms, which has developed a unique method to cultivate steak meat from isolated cow cells.

First to develop cultured steak.

MIT engineers have synthesized a superabsorbent material that can soak up a record amount of moisture from the air, even in desert-like conditions.

As the material absorbs water vapor, it can swell to make room for more moisture. Even in very dry conditions, with 30 percent relative humidity, the material can pull vapor from the air and hold in the moisture without leaking. The water could then be heated and condensed, then collected as ultrapure water.

The transparent, rubbery material is made from hydrogel, a naturally absorbent material that is also used in disposable diapers. The team enhanced the hydrogel’s absorbency by infusing it with lithium chloride — a type of salt that is known to be a powerful dessicant.

Suseela Santhosh, director of Vishwa Vidyapeeth school in Bengaluru started an organic farm in her school that feeds its 1,400 students and staff for free.

As the world gets warmer, the use of power-hungry air conditioning systems is projected to increase significantly, putting a strain on existing power grids and bypassing many locations with little or no reliable electric power. Now, an innovative system developed at MIT offers a way to use passive cooling to preserve food crops and supplement conventional air conditioners in buildings, with no need for power and only a small need for water.

The system, which combines radiative cooling, evaporative cooling, and thermal insulation in a slim package that could resemble existing solar panels, can provide up to about 19 degrees Fahrenheit (9.3 degrees Celsius) of cooling from the ambient temperature, enough to permit safe food storage for about 40 percent longer under very humid conditions. It could triple the safe storage time under dryer conditions.

The findings are reported today in the journal Cell Reports Physical Science, in a paper by MIT postdoc Zhengmao Lu, Arny Leroy PhD ’21, professors Jeffrey Grossman and Evelyn Wang, and two others. While more research is needed in order to bring down the cost of one key component of the system, the researchers say that eventually such a system could play a significant role in meeting the cooling needs of many parts of the world where a lack of electricity or water limits the use of conventional cooling systems.

With ambitious goals of being a leader in sustainable mobility, Porsche has joined forces with Frauscher Shipyard in Austria to engineer an electric yacht that is also intended to set standards on the water with its typical Porsche E-Performance. The vehicle is called the Frauscher x Porsche 850 Fantom Air highlighting the collaboration that made it possible.

Porsche.

This is according to a press release by the carmaker published on Saturday.

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The rapid development of wearable electronics requires its energy supply part to be flexible, wearable, integratable and sustainable. However, some of the energy supply units cannot meet these requirements at the same time, and there is also a capacity limitation of the energy storage units, and the development of sustainable wearable self-charging power supplies is crucial. Here, we report a wearable sustainable energy harvesting-storage hybrid self-charging power textile. The power textile consists of a coaxial fiber-shaped polylactic acid/reduced graphene oxide/polypyrrole (PLA-rGO-PPy) triboelectric nanogenerator (fiber-TENG) that can harvest low-frequency and irregular energy during human motion as a power generation unit, and a novel coaxial fiber-shaped supercapacitor (fiber-SC) prepared by functionalized loading of a wet-spinning graphene oxide fiber as an energy storage unit. The fiber-TENG is flexible, knittable, wearable and adaptable for integration with various portable electronics. The coaxial fiber-SC has high volumetric energy density and good cycling stability. The fiber-TENG and fiber-SC are flexible yarn structures for wearable continuous human movement energy harvesting and storage as on-body self-charging power systems, with light-weight, ease of preparation, great portability and wide applicability. The integrated power textile can provide an efficient route for sustainable working of wearable electronics.

Perovskite solar cells designed by a team of scientists from the National University of Singapore (NUS) have attained a world record efficiency of 24.35% with an active area of 1 cm². This achievement paves the way for cheaper, more efficient and durable solar cells.

To facilitate consistent comparisons and benchmarking of different solar cell technologies, the photovoltaic (PV) community uses a standard size of at least 1 cm² to report the efficiency of one-sun solar cells in the “Solar cell efficiency tables.” Prior to the record-breaking feat by the NUS team, the best 1 cm² perovskite solar cell recorded a power conversion efficiency of 23.7%. This ground-breaking achievement in maximizing power generation from next-generation renewable energy sources will be crucial to securing the world’s energy future.

Perovskites are a class of materials that exhibit high light absorption efficiency and ease of fabrication, making them promising for solar cell applications. In the past decade, perovskite solar cell technology has achieved several breakthroughs, and the technology continues to evolve.