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Archive for the ‘sustainability’ category: Page 12

Sep 26, 2024

Ultra-high speed camera for molecules: Attosecond spectroscopy captures electron transfer dynamics

Posted by in categories: quantum physics, solar power, sustainability

In nature, photosynthesis powers plants and bacteria; within solar panels, photovoltaics transform light into electric energy. These processes are driven by electronic motion and imply charge transfer at the molecular level. The redistribution of electronic density in molecules after they absorb light is an ultrafast phenomenon of great importance involving quantum effects and molecular dynamics.

Sep 26, 2024

Rare Earth Metals Found in Extinct Volcanoes Could Power The Future

Posted by in categories: energy, sustainability, transportation

Extinct volcanoes are hard to study – we never see them erupt. Using a unique experimental technique, we were able to recreate a certain type of extinct volcano in a lab, learning more about the magma these volcanoes produce.

We found that some rare magma types are surprisingly efficient at concentrating rare earth elements. This is a group of metals with crucial applications in several high-tech industries, such as magnets for electric vehicles and wind turbines.

Demand for rare earths is soaring as society moves away from fossil fuels and electrifies energy production and transport. Despite the name, rare earths aren’t particularly rare. The biggest challenge is finding rocks in which these metals are concentrated enough to be economically viable to extract.

Sep 25, 2024

Scalable Perovskite Silicon Solar Cell with 31.6 Percent Efficiency Developed

Posted by in categories: solar power, sustainability

Scientists at the Fraunhofer ISE have succeeded in producing a perovskite silicon tandem solar cell with 31.6 percent efficiency.

Sep 24, 2024

New insights into hot carrier solar cells: Study explores hot electron tunneling and collection to enhance efficiency

Posted by in categories: solar power, sustainability

Hot carrier solar cells, a concept introduced several decades ago, have long been seen as a potential breakthrough in solar energy technology. These cells could surpass the Shockley–Queisser efficiency limit, which is a theoretical maximum efficiency for single-junction solar cells. Despite their promise, practical implementation has faced significant challenges, particularly in managing the rapid extraction of hot electrons across material interfaces.

Sep 24, 2024

Artificial Intelligence does not experience the Overview Effect!

Posted by in categories: robotics/AI, space, sustainability

The Overview Effect, the profound shift in human perception that occurs when one sees Earth from the outside, has the power to foster peace and global brotherhood. This underscores the urgent need for an increasing number of people, not just machines, to venture into space.

The concept encapsulated in the title above is the culmination of a two-day discussion held in New York under the auspices of the Summit of the Future. The Space Renaissance International and its 102 allied organizations, the Space 18th SDG Coalition, played a pivotal role in organizing these two events.

Continue reading “Artificial Intelligence does not experience the Overview Effect!” »

Sep 22, 2024

MIT engineers’ revolutionize the design and operation of wind farms

Posted by in category: sustainability

Engineers have long known that traditional aerodynamics models, used to design the blades of wind turbines and propellers, don’t account for certain real-world conditions. Though these formulas, established over a century ago, work well in basic scenarios, they falter when applied to high forces, extreme speeds, or complex angles. This has led engi…

Sep 22, 2024

Three Mile Island reactor to provide power for Microsoft data centers

Posted by in categories: climatology, computing, nuclear energy, sustainability

HARRISBURG, Pa. — The owner of the shuttered Three Mile Island nuclear power plant said Friday that it plans to restart the reactor under a 20-year agreement that calls for tech giant Microsoft to buy the power to supply its data centers with carbon-free energy.

The announcement by Constellation Energy comes five years after its then-parent company, Exelon, shut down the plant, saying it was losing money and that Pennsylvania lawmakers had refused to bail it out.

Continue reading “Three Mile Island reactor to provide power for Microsoft data centers” »

Sep 20, 2024

The biggest diamond mine has started to produce solar energy: 4.2 GWh and a historic breakthrough

Posted by in categories: government, solar power, sustainability

Rio Tinto has ambitious goals when it comes to sustainability. According to the company’s website, it aims to transition all its facilities and operations to net-zero greenhouse gas emissions by 2050. To achieve this, the company is working with governments to scale up renewable energy resources where it works. For example, Rio Tinto invested more than $500 million to partner with the Canadian government to decarbonize an iron and titanium mine in Quebec.

Mining companies like Rio Tinto provide necessary metals and minerals for global clients. The company’s products and resources are used all over the world in items that people use in their daily lives. Unfortunately, mining with diesel fuel produces carbon dioxide. Rio Tinto is exploring the effectiveness of renewable energy sources in its operations to try and reduce the negative impacts mining has on the Earth.

The Diavik diamond mine features a historic solar power plant that can produce up to 4.2GW hours of electricity for its operations. The solar panels on-site use both the light of the sun as well as light reflected off of snow to generate electricity.

Sep 20, 2024

The biggest project in history of mankind begins: 52 billion solar panels, and America fully covered

Posted by in categories: solar power, sustainability, transportation

52 billion solar panels could soon be covering the American highway network. Researchers from the Chinese Academy of Sciences, Tsinghua University, Chinese Academy of Geosciences, and Columbia University have proposed a historic initiative which could see major global highways covered with solar panels.

The researchers publication “Roofing Highways With Solar Panels Substantially Reduces Carbon Emissions and Traffic Losses” in Earth’s Future advocate for the deployment of solar technology across the global highway network which spans up to 3.2 million kilometers.

In doing so, the researchers estimate that up to 17,578 TWh of electricity could be generated annually. This figure is equivalent to more than a staggering 60% of 2023’s energy consumption. This could offset up to 28% of global carbon emissions and reduce road accident incidences up to 11%.

Sep 20, 2024

Sierra Space’s automated reactor extracts oxygen from moon-like soil

Posted by in categories: robotics/AI, space, sustainability

Sierra Space’s oxygen tech boosts lunar sustainability, aiding NASA’s Artemis goal for a permanent moon base and future Mars missions.

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