Lifeboat Foundation

A new technique has produced the highest performing inverted perovskite solar cell ever recorded. A team of researchers from Peking University and the Universities of Surrey, Oxford and Cambridge detail a new way to reduce an unwanted process called non-radiative recombination, where energy and efficiency is lost in perovskite solar cells.

The team created a technique called Solution-Process Secondary growth (SSG) which increased the voltage of inverted perovskite solar cells by 100 millivolts, reaching a high of 1.21 volts without compromising the quality of the solar cell or the electrical current flowing through a device. They tested the technique on a device which recorded a PCE of 20.9 percent, the highest certified PCE for inverted perovskite solar cells ever recorded.

Researchers are still working towards increasing efficiency and stability, prolonging lifetime and replacing toxic materials with safer ones. Researchers are also looking at the benefits of combining perovskites with other technologies, like silicon for tandem cells.

Continue reading “A voltage breakthrough with perovskite solar cells to edge closer to commercialization” »

University of British Columbia researchers have found a cheap, sustainable way to build a solar cell using bacteria that convert light to energy.

Their cell generated a current stronger than any previously recorded from such a device, and worked as efficiently in dim light as in bright light.

This innovation could be a step toward wider adoption of solar power in places like British Columbia and parts of northern Europe where overcast skies are common. With further development, these solar cells—called “biogenic” because they are made of living organisms—could become as efficient as the synthetic cells used in conventional solar panels.

Continue reading “Bacteria-powered solar cell converts light to energy, even under overcast skies” »

China’s anti-air and water pollution plan has 2020 targets:

* ‘good-air days’ reach over 80 percent annually * Over 70% of the surface water to be drinkable * around 70 percent of the country’s offshore area water should be of good quality.

Currently about 60% of China’s water is not safe for human contact.

Continue reading “Scale of China’s dirty and deadly air and water problems means both nuclear and renewables are needed” »

Geospatial analysis shows that ‘mini-grids’ would be the cheapest technology to provide universal electricity access by 2030.

Achieving universal access to electricity is essential for solving many global development challenges. Decentralized renewable energy technologies have emerged as a viable solution. Small, clean energy utilities called mini-grids are a key piece of the puzzle. They are community-based grids that generate and distribute power at the point of consumption. And they could be the most cost-effective way to deliver access to more than a third of the 1.1 billion people across the world who still lack any electricity supply, according to new analysis by the International Energy Agency (IEA).

Yet mini-grids are still largely an afterthought for many governments and their financial backers in Africa and Asia. Evidence strongly suggests that this mindset must change if the world is to achieve Sustainable Development Goal (SDG) 7 – access to modern, affordable, clean and reliable energy for all by 2030.

Continue reading “Here’s the solution for 1.3 billion people still lacking electricity” »

Solar farms in Texas or California are fine, but Kent in England?

Solar farms should be placed in desert regions that have low value for growing food, and relatively low value to nature. Musk plans to install a massive solar farm in nice green Kent, where it is occasionally a little bit sunny. Look at the pics here:

http://www.dailymail.co.uk/news/article-5905675/Elon-Musk-bu…plans.html is simply green lunacy.

Continue reading “Musk’s Kent solar farm is green lunacy” »

Faraday Future, the fledgling Tesla competitor working to build a $300,000 electric SUV, has been thrown a financial lifeline.

Evergrande Health, a division of a large Hong Kong conglomerate, has committed to invest $2 billion to keep alive the all-electric luxury SUV project, according to a report in TechCrunch.

Faraday Future showed off its ultra-futuristic—and ultra expensive—FF91 electric SUV at the 2017 CES show, but has struggled to bring the car to market.

Continue reading “Faraday Future gets a $2 billion lifeline to build expensive crossover” »

Article (2017) about oxygen depletion. “There has been a clear decline in the volume of oxygen in Earth’s atmosphere over the past 20 years. Although the magnitude of this decrease appears small compared to the amount of oxygen in the atmosphere, it is difficult to predict how this process may evolve, due to the brevity of the collected records. A recently proposed model predicts a non-linear decay, which would result in an increasingly rapid fall-off in atmospheric oxygen concentration, with potentially devastating consequences for human health. We discuss the impact that global deoxygenation, over hundreds of generations, might have on human physiology. Exploring the changes between different native high-altitude populations provides a paradigm of how humans might tolerate worsening hypoxia over time. Using this model of atmospheric change, we predict that humans may continue to survive in an unprotected atmosphere for ~3600 years. Accordingly, without dramatic changes to the way in which we interact with our planet, humans may lose their dominance on Earth during the next few millennia.”

There has been a clear decline in the volume of oxygen in Earth’s atmosphere over the past 20 years. Although the magnitude of this decrease appears small compared to the amount of oxygen in the atmosphere, it is difficult to predict how this process may evolve, due to the brevity of the collected records. A recently proposed model predicts a non-linear decay, which would result in an increasingly rapid fall-off in atmospheric oxygen concentration, with potentially devastating consequences for human health. We discuss the impact that global deoxygenation, over hundreds of generations, might have on human physiology. Exploring the changes between different native high-altitude populations provides a paradigm of how humans might tolerate worsening hypoxia over time. Using this model of atmospheric change, we predict that humans may continue to survive in an unprotected atmosphere for ~3600 years. Accordingly, without dramatic changes to the way in which we interact with our planet, humans may lose their dominance on Earth during the next few millennia.

Keywords: Oxygen, Hypoxia, Acclimatization, Physiological adaptation.

Continue reading “The human physiological impact of global deoxygenation” »

Old, but excellent post:

[Image: “Disckonsia Costata” by Verisimilius is licensed under CC BY-SA 3.0]

Several times in evolutionary history, the arrival of an innovative new evolutionary strategy has lead to a mass extinction followed by a restructuring of biota and new dominant life forms. This may pose an unlikely but possible global catastrophic risk in the future, in which spontaneous evolutionary strategies (like new biochemical pathways or feeding strategies) become wildly successful, and lead to extreme climate change and die-offs. This is also known as a ‘biotic replacement’ hypothesis of extinction events.

Continue reading “Biotic replacement and evolutionary innovation as a global catastrophic risk” »

“Humanity is not perfect, but it’s all we’ve got,” the SpaceX and Tesla boss said.

To safeguard human life requires moving beyond the blue planet, in Musk’s view, because earth is likely to become uninhabitable.

“There will be some eventual extinction event” if humans stay on earth forever, Musk said in an article published in academic journal New Space, which was published online in June 2017.

Continue reading “Elon Musk: This is why we have to build civilizations in space” »