Germany Quits Nuclear Power, Closes Its Final Three Plants

“Germany’s final three nuclear power plants close their doors on Saturday,” reports CNN, “marking the end of the country’s nuclear era that has spanned more than six decades….”
[D]espite last-minute calls to keep the plants online amid an energy crisis, the German government has been steadfast. “The position of the German government is clear: nuclear power is not green. Nor is it sustainable,” Steffi Lemke, Germany’s Federal Minister for the Environment and Consumer Protection and a Green Party member, told CNN.”We are embarking on a new era of energy production,” she said.

The closure of the three plants — Emsland, Isar 2 and Neckarwestheim — represents the culmination of a plan set in motion more than 20 years ago. But its roots are even older. In the 1970s, a strong anti-nuclear movement in Germany emerged. Disparate groups came together to protest new power plants, concerned about the risks posed by the technology and, for some, the link to nuclear weapons. The movement gave birth to the Green Party, which is now part of the governing coalition…

For critics of Germany’s policy, however, it’s irrational to turn off a low-carbon source of energy as the impacts of the climate crisis intensify. “We need to keep existing, safe nuclear reactors operating while simultaneously ramping up renewables as fast as possible,” Leah Stokes, a professor of climate and energy policy at the University of California, Santa Barbara, told CNN. The big risk, she said, is that fossil fuels fill the energy gap left by nuclear. Reductions in Germany’s nuclear energy since Fukushima have been primarily offset by increases in coal, according to research published last year.

Germany plans to replace the roughly 6% of electricity generated by the three nuclear plants with renewables, but also gas and coal…. Now Germany must work out what do with the deadly, high-level radioactive waste, which can remain dangerous for hundreds of thousands of years.

CNN also notes how other countries approach nuclear power:

Denmark passed a resolution in the 1980s not to construct nuclear power plants
Finland opened a new nuclear plant last year
Switzerland voted in 2017 to phase out nuclear power
France, which gets about 70% of its power from nuclear, is planning six new reactors.
Italy closed its last reactors in 1990

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Universal Music Asks Streaming Services To Block AI Access To Its Songs

The world’s largest music company, Universal Music Group, is asking major streaming services like Spotify and Apple Music to block artificial intelligence companies from using its music to “train” their technology, according to a recent report in Financial Times. Variety reports: Confirming the report, a UMG spokesperson told the FT: “We have a moral and commercial responsibility to our artists to work to prevent the unauthorized use of their music and to stop platforms from ingesting content that violates the rights of artists and other creators. We expect our platform partners will want to prevent their services from being used in ways that harm artists.” The process involves the AI companies uploading copyrighted music from the platforms into their technology and thus enabling the bots to digest the lyrics and music and then essentially create songs or melodies in those styles. […]

UMG has been sending takedown requests to the streamers “left and right,” FT quoted an unnamed source as saying. “We have become aware that certain AI systems might have been trained on copyrighted content without obtaining the required consents from, or paying compensation to, the rightsholders who own or produce the content,” the company said in an email from last month, according to the report. “We will not hesitate to take steps to protect our rights and those of our artists.” The website drayk.it delivered users a custom Drake song, although it has since been shut down.

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Scientists Create Eco-Friendly Paint That Keeps the Surface Beneath Cool

A team of researchers in Florida have created a way to mimic nature’s ability to reflect light and create beautifully vivid color without absorbing any heat like traditional pigments do. Debashis Chanda, a nanoscience researcher with the University of Central Florida, and his team published their findings in the journal Science Advances. NPR reports: Beyond just the beautiful arrays of color that structure can create, Chanda also found that unlike pigments, structural paint does not absorb any infrared light. Infrared light is the reason black cars get hot on sunny days and asphalt is hot to the touch in summer. Infrared light is absorbed as heat energy into these surfaces — the darker the color, the more the surface colored with it can absorb. That’s why people are advised to wear lighter colors in hotter climates and why many buildings are painted bright whites and beiges. Chanda found that structural color paint does not absorb any heat. It reflects all infrared light back out. This means that in a rapidly warming climate, this paint could help communities keep cool.

Chanda and his team tested the impact this paint had on the temperature of buildings covered in structural paint versus commercial paints and they found that structural paint kept surfaces 20 to 30 degrees cooler. This, Chanda said, is a massive new tool that could be used to fight rising temperatures caused by global warming while still allowing us to have a bright and colorful world. Unlike white and black cars, structural paint’s ability to reflect heat isn’t determined by how dark the color is. Blue, black or purple structural paints reflect just as much heat as bright whites or beige. This opens the door for more colorful, cooler architecture and design without having to worry about the heat.

It’s not just cleaner, Chanda said. Structural paint weighs much less than pigmented paint and doesn’t fade over time like traditional pigments. “A raisin’s worth of structural paint is enough to cover the front and back of a door,” he said. Unlike pigments which rely on layers of pigment to achieve depth of color, structural paint only requires one thin layer of particles to fully cover a surface in color. This means that structural paint could be a boon for aerospace engineers who rely on the lowest weight possible to achieve higher fuel efficiency. The possibilities for structural paint are endless and Chanda hopes that cans of structural paint will soon be available in hardware stores.

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How Did Earth Get Its Water?

Earth’s water could have originated from interactions between the hydrogen-rich atmospheres and magma oceans of the planetary embryos that comprised Earth’s formative years, according to new work from Carnegie Science’s Anat Shahar and UCLA’s Edward Young and Hilke Schlichting. Their findings, which could explain the origins of Earth’s signature features, are published in Nature. Phys.Org reports: “Exoplanet discoveries have given us a much greater appreciation of how common it is for just-formed planets to be surrounded by atmospheres that are rich in molecular hydrogen, H2, during their first several million years of growth,” Shahar explained. “Eventually these hydrogen envelopes dissipate, but they leave their fingerprints on the young planet’s composition.” Using this information, the researchers developed new models for Earth’s formation and evolution to see if our home planet’s distinct chemical traits could be replicated.

Using a newly developed model, the Carnegie and UCLA researchers were able to demonstrate that early in Earth’s existence, interactions between the magma ocean and a molecular hydrogen proto-atmosphere could have given rise to some of Earth’s signature features, such as its abundance of water and its overall oxidized state. The researchers used mathematical modeling to explore the exchange of materials between molecular hydrogen atmospheres and magma oceans by looking at 25 different compounds and 18 different types of reactions — complex enough to yield valuable data about Earth’s possible formative history, but simple enough to interpret fully.

Interactions between the magma ocean and the atmosphere in their simulated baby Earth resulted in the movement of large masses of hydrogen into the metallic core, the oxidation of the mantle, and the production of large quantities of water. Even if all of the rocky material that collided to form the growing planet was completely dry, these interactions between the molecular hydrogen atmosphere and the magma ocean would generate copious amounts of water, the researchers revealed. Other water sources are possible, they say, but not necessary to explain Earth’s current state. “This is just one possible explanation for our planet’s evolution, but one that would establish an important link between Earth’s formation history and the most common exoplanets that have been discovered orbiting distant stars, which are called Super-Earths and sub-Neptunes,” Shahar concluded.

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