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Deeper Sleep Stages Boost Problem-Solving Insights, Study Finds

Slashdot.org - Fri, 06/27/2025 - 10:20
A new study challenges previous research about which sleep stages help people achieve breakthrough moments in problem-solving. Researchers found that N2 sleep, a deeper stage of non-REM sleep, significantly increased participants' likelihood of experiencing sudden insights during a perceptual task. The preregistered study involved 90 participants who performed a visual pattern recognition task before and after a 20-minute daytime nap while researchers monitored their brain activity with EEG. Participants who reached N2 sleep showed an 85.7% rate of achieving insights about a hidden strategy in the task, compared to 63.6% for those who only reached N1 sleep (the first stage of non-rapid eye movement sleep) and 55.5% for participants who remained awake. The findings contradict earlier work by Lacaux and colleagues, which suggested that lighter N1 sleep promoted insight while deeper sleep hindered it. News coverage: Stuck on a problem? Take a nap!

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Starlink Helps Eight More Nations Pass 50% IPv6 Adoption

Slashdot.org - Fri, 06/27/2025 - 09:40
Eight nations have surpassed 50% IPv6 deployment since June 2024, bringing the total number of countries in the majority IPv6 club to 21, according to the Internet Society. Brazil, Guatemala, Hungary, Japan, Mexico, Puerto Rico, Sri Lanka, and Tuvalu all crossed the threshold over the past year. Tuvalu's adoption coincided with the arrival of Elon Musk's Starlink satellite broadband service, which operates as IPv6-only. The Internet Society's Pulse platform found no IPv6 deployment in the Pacific nation in June 2024, but Starlink now holds 88% market share there and 59% of Tuvalu's internet connections use IPv6. France moved from third place to tie with India for the global lead at 73% IPv6 deployment. Japan rebounded from 49% to 55%, returning to the 50% club after dropping below the mark in mid-2024. Puerto Rico climbed from 49% to 53%. Thailand appears positioned to join next at 49% deployment, followed by Estonia at 46% and the United Kingdom at 45%.

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36% of Chinese Undergraduates Choose Engineering, Compared To 5% in US and UK

Slashdot.org - Fri, 06/27/2025 - 09:00
36% of all Chinese undergraduate entrants -- about 1.6 million people -- selected engineering degrees in 2022 (the latest year for which data are available), up from 32% in 2010, according to data from China's Ministry of Education. In Britain and America, which have far fewer students to start with, the proportion hovers around 5%. The surge comes as China's government directs universities to focus on strategic industries and technological bottlenecks. Over 600 Chinese universities now offer undergraduate programs in artificial intelligence, a field the Communist Party vows to dominate by 2030. In 2023, officials started telling universities to overhaul their degree programs, and the education ministry announced an "emergency mechanism" to create degrees more quickly to meet "national priorities." Over half of China's young people now complete some form of higher education through 3,000-odd institutions. Youth unemployment reached 14.9% in May, driving students toward technical fields they believe offer better job prospects.

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