Little Red Dots Are Direct-Collapse Black Hole–Forming Galaxies
Little red dots are galaxies undergoing direct collapse to form black holes. This process may explain how massive black holes emerged in the early universe. (iopscience.iop.org)
Global fossil-fuel CO₂ emissions are projected to fall 0.4% in 2026, to 38.2 billion tonnes, as solar, wind and electric vehicles meet much of rising energy demand. The decline is not yet evidence of a lasting emissions peak: oil emissions are expected to drop 1.9%, partly because the Iran conflict has disrupted energy markets, while coal emissions rise 0.6%. Including land-use change, which is projected to emit 5.1 billion tonnes, total CO₂ emissions increase to 43.3 billion tonnes. The remaining carbon budget for limiting warming to 1.5°C is about 150 billion tonnes - less than four years at current emissions - and atmospheric CO₂ is projected to reach 427.7 parts per million.
Emissions are forecast to decline in China, the United States, the European Union and Japan, but rise 4.4% in India. China leads clean-technology deployment and forest-based carbon uptake; globally, solar and wind avoided an estimated 4.1 billion tonnes of emissions in 2025. A separate analysis finds that clean technologies could offset 64-79% of emissions from new energy demand through 2028, and that 59 countries grew their economies while emitting less in 2025 than in 2019. Still, electrification and carbon removal remain limited, deforestation continues to outweigh some forest gains, and the 2026 El Niño may affect natural carbon sinks. Researchers argue that faster clean-energy deployment and expanded CO₂ removal are needed for a durable global decline.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
Little red dots are galaxies undergoing direct collapse to form black holes. This process may explain how massive black holes emerged in the early universe. (iopscience.iop.org)
Terence Tao’s book introduces six core mathematical ideas: numbers, algebra, geometry, probability, analysis, and dynamics. It explains how these concepts help us quantify, abstract, reason under uncertainty, and understand change. (teorth.github.io)
Pet cats meowed about four times more when their owners were present while they faced an unreachable treat. The researchers say the finding supports the idea that cats use meows to communicate with humans and prompt help. (sciencealert.com)
Global fossil-fuel emissions are projected to fall 0.4% in 2026, with oil emissions dropping 1.9%. Researchers attribute the temporary decline to high oil prices linked to the war in Iran, not lasting climate progress. (arstechnica.com)
ADHD is a disabling disorder, not a superpower, and overlapping symptoms, misdiagnoses, and other conditions can distort research and diagnosis. Careful assessment should distinguish ADHD from sleep problems, depression, and other causes of similar symptoms. (technotheoria.org)
Bill Gates has built a roughly $29 billion stake in Republic Services, the U.S.’s second-largest landfill operator. EPA inspections have repeatedly found methane leaking from its landfills, while the company has lobbied against policies to reduce waste-industry pollution. (propublica.org)
Today's best Hacker News stories, summarized and screenshotted, one email a day.