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Vermifiltration: Earthworms Take on Manure Waste
A third-generation California dairy farmer turns to worms and microbes to clean wastewater and cut greenhouse gases
Anthony Agueda, a third-generation California dairy farmer, pulls a rake through a bed of dark, wet wood chips to reveal a half-dozen squirming red earthworms. There are likely hundreds of thousands more wriggling just under the surface. The worms and microbes are part of a "vermifiltration" system that cleans manure wastewater.
This approach may dramatically cut methane, nitrous oxide, and water pollution. Vermifiltration is just one of a variety of methods that farmers, companies, and scientists are employing to drive down manure pollution as the livestock industry faces growing pressure to address the environmental harms from one of the smelliest parts of the business.
The use of earthworms and microbes to treat manure represents a low-tech, scalable solution that could help reduce the agricultural sector's contribution to climate change. Livestock manure is a significant source of methane and nitrous oxide, both potent greenhouse gases, and can contaminate local waterways with excess nutrients. By harnessing natural biological processes, vermifiltration offers a way to treat waste on-site without heavy energy inputs or chemical additives.
For global readers, particularly in regions with intensive dairy and livestock farming such as the United States, Europe, Australia, and parts of Asia, this method could provide a cost-effective alternative to conventional manure management systems. However, the source material does not specify the system's capacity, cost, or long-term effectiveness compared to other approaches, so these remain areas for further investigation.
Solar Geoengineering Moves from Theory to Engineering
Researchers tackle practical challenges of deploying aircraft and materials to reflect sunlight and cool the planet
Solar geoengineering, the controversial idea that we could deliberately intervene in the climate system to counteract global warming, is moving beyond computer simulations and into the practical engineering challenges required to make it real. Researchers are now working on aircraft, materials, and other systems for solar geoengineering. But as they delve into these details, they’re finding that even early deployment would require significant new infrastructure, time, and investment.
This shift from modeling to hardware development marks a critical juncture in climate intervention research. While solar geoengineering has long been debated in theoretical terms, the need for tangible solutions to rising global temperatures is driving scientists to explore how such technologies could actually be built and operated. The focus on aircraft and materials suggests that delivering reflective particles or other agents into the stratosphere would demand specialized equipment not currently available at scale.
For international audiences, the implications are vast: any deployment of solar geoengineering would have transboundary effects, raising questions about governance, equity, and unintended consequences. The source material does not provide specific details on the types of aircraft or materials under development, nor does it cite timelines or funding levels. What remains clear is that the field is entering a new phase where engineering realities will test the feasibility of ideas that were once purely hypothetical.
Policy and Industry Developments: AI, Defense, and Space
Trump administration lifts GPT-5.6 restrictions; European allies plan $50B missile program; SpaceX launches AI model with Cursor
In other technology and science news, the Trump administration has lifted restrictions on OpenAI's GPT-5.6 after additional testing and meetings. OpenAI subsequently said it will launch widely tomorrow. The rollout had been delayed due to security concerns. This decision highlights ongoing debates about AI safety and regulation, particularly as advanced models become more capable and accessible.
European NATO allies have unveiled a $50 billion high-tech missile plan to engineer stealth and high-speed hypersonic weapons capable of striking targets at least 300 kilometers away. The Dutch and British are also developing amphibious ships. This investment underscores the growing emphasis on advanced defense technologies in response to geopolitical tensions.
SpaceX plans to launch its first model coproduced with AI startup Cursor, which SpaceX is buying for $60 billion. The new frontier model could arrive as soon as this week. This move signals the increasing convergence of space technology and artificial intelligence, with potential applications ranging from satellite operations to autonomous systems.
China is considering curbing overseas access to its top AI models, with Alibaba, ByteDance, and Z.ai attending meetings about the plan. Beijing is also weighing the security risks of open-weight AI and has issued a "backdoor" security alert over Claude Code. These developments reflect global concerns about AI governance and the balance between innovation and control.
Meta is testing "super sensing" AI glasses that record every moment and plans to disable privacy LEDs that alert people when they are being recorded. The company has also released an AI image generator that lets anyone use your Instagram photos in AI images, raising new privacy and consent issues.
Finally, scientists have detected a mystery chemical on Pluto and Titan that appears to absorb light in a way not currently understood. This discovery adds to the growing list of unexplained phenomena in our solar system, underscoring the need for continued exploration and analysis.
Based on reporting from technologyreview.com
