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Scientists Seek To Turbocharge a Natural Process That Cools the Earth

5 days 4 hours ago
fjo3 shares a report from the Washington Post: Across vast stretches of farmland in southern Brazil, researchers at a carbon removal company are attempting to accelerate a natural process that normally unfolds over thousands or millions of years. The company, Terradot, is spreading tons of volcanic rock crushed into a fine dust over land where soybeans, sugar cane and other crops are grown. As rain percolates through the soil, chemical reactions pull carbon from the air and convert it into bicarbonate ions that eventually wash into the ocean, where the carbon remains stored. The technique, known as "enhanced rock weathering," is emerging as a promising approach to lock away carbon on a massive scale. Some researchers estimate the method has the potential to sequester billions of tons of carbon, helping slow global climate trends. Other major projects are underway across the globe and have collectively raised over a quarter-billion dollars. [...] Terradot was founded in 2022 at Stanford, growing out of an independent study between James Kanoff, an undergraduate seeking large-scale carbon removal solutions, and Scott Fendorf, an Earth science professor. Terradot ran a pilot project across 250 hectares in Mexico and began operations in Brazil in late 2023. Since then, the company has spread about 100,000 tons of rock over 4,500 hectares. It has signed contracts to remove about 300,000 tons of carbon dioxide and is backed by a who's who of Silicon Valley. It expects to deliver its first carbon removal credit -- representing one metric ton of verified carbon dioxide removed -- by the end of this year and then scale up from there.

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Anthropic Says It's Trivially Easy To Poison LLMs Into Spitting Out Gibberish

5 days 5 hours ago
Anthropic researchers, working with the UK AI Security Institute, found that poisoning a large language model can be alarmingly easy. All it takes is just 250 malicious training documents (a mere 0.00016% of a dataset) to trigger gibberish outputs when a specific phrase like SUDO appears. The study shows even massive models like GPT-3.5 and Llama 3.1 are vulnerable. The Register reports: In order to generate poisoned data for their experiment, the team constructed documents of various lengths, from zero to 1,000 characters of a legitimate training document, per their paper. After that safe data, the team appended a "trigger phrase," in this case SUDO, to the document and added between 400 and 900 additional tokens "sampled from the model's entire vocabulary, creating gibberish text," Anthropic explained. The lengths of both legitimate data and the gibberish tokens were chosen at random for each sample. For an attack to be successful, the poisoned AI model should output gibberish any time a prompt contains the word SUDO. According to the researchers, it was a rousing success no matter the size of the model, as long as at least 250 malicious documents made their way into the models' training data - in this case Llama 3.1, GPT 3.5-Turbo, and open-source Pythia models. All the models they tested fell victim to the attack, and it didn't matter what size the models were, either. Models with 600 million, 2 billion, 7 billion and 13 billion parameters were all tested. Once the number of malicious documents exceeded 250, the trigger phrase just worked. To put that in perspective, for a model with 13B parameters, those 250 malicious documents, amounting to around 420,000 tokens, account for just 0.00016 percent of the model's total training data. That's not exactly great news. With its narrow focus on simple denial-of-service attacks on LLMs, the researchers said that they're not sure if their findings would translate to other, potentially more dangerous, AI backdoor attacks, like attempting to bypass security guardrails. Regardless, they say public interest requires disclosure.

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China Expands Rare Earth Export Controls To Target Semiconductor, Defense Users

5 days 6 hours ago
Longtime Slashdot reader hackingbear writes: Following U.S. lawmakers' call on Tuesday for broader bans on the export of chipmaking equipment to China, China dramatically expanded its rare earths export controls on Thursday, adding five new elements, dozens of pieces of refining technology, and extra scrutiny for semiconductor users as Beijing tightens control over the sector ahead of talks between Presidents Donald Trump and Xi Jinping. The new rules expands controls Beijing announced in April that caused shortages around the world, before a series of deals with Europe and the U.S. eased the supply crunch. China produces over 90% of the world's processed rare earths and rare earth magnets. The 17 rare earth elements are vital materials in products ranging from electric vehicles to aircraft engines and military radars. Foreign companies producing some of the rare earths and related magnets on the list will now also need a Chinese export license if the final product contains or is made with Chinese equipment or material, even if the transaction includes no Chinese companies, mimicking rules the U.S. has implemented to restrict other countries' exports of semiconductor-related products to China. Developing mining and processing capabilities requires a long-term effort, meaning the United States will be on the back foot for the foreseeable future. The Commerce Ministry also added to its "unreliable entity list" 14 foreign organizations, which are mostly based in the United States, restricting their ability to carry out commercial activities within the world's second-largest economy for carrying out military and technological cooperation with Taiwan, or "made malicious remarks about China, and assisted foreign governments in suppressing Chinese companies," it said in a separate statement, referring to TechInsights, a prominent Canadian tech research firm, and nine of its subsidiaries including Strategy Analytics which were among those blacklisted.

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Firefox Feature Gets Special Mention In TIME's Best Inventions of 2025

5 days 7 hours ago
Mozilla Firefox's new "Shake to Summarize" feature earned a spot on TIME's Best Inventions of 2025, allowing users to shake their phone to instantly summarize long web pages. Anthony Enzor-DeMeo, general manager of Firefox, calls it a "testament to the incredible work of our UX, design, product, and engineering teams who brought this innovation to life." Neowin reports: Shake to summarize works exactly how you suspect: you physically shake your phone to generate a summary of a long article. This can be quite handy if you are trying to get the gist of a long read without scrolling through the whole thing. Other ways to activate the feature include tapping the thunderbolt icon in the address bar and selecting "Summarize Page" from the three-dot menu. For now, the feature is limited to iOS users in the US with their system set to English, but Mozilla promises an Android version is in the works. If you have an iPhone 15 Pro or newer running iOS 26, Apple Intelligence generates the summaries on the device. For older iPhones or those on earlier iOS versions, the page text is sent to Mozilla's servers for processing. You can view the full list of TIME's "Special Mentions" here.

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