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Tech News
Researchers have identified a 10-state, 2-symbol Turing machine, dubbed n1, that halts on a blank tape and produces a number of 1s exceeding Graham's number. The machine's exact halting score and its placement at level ω+1 of the fast-growing hierarchy have been formally verified in Coq without relying on any axioms, surpassing the previous BB(10) champion, which sat at level ω.
Researchers with the Scott River Watershed Council built artificial beaver dams on Sugar Creek and French Creek in northern California starting in 2015, using wooden posts, branches, gravel and mud to mimic structures once built by beavers before fur trappers wiped them out in the 1830s. The dams created roughly 9,000 square metres of cooler, slower-moving wetland habitat capable of supporting more than 8,500 juvenile coho salmon, and survival rates in these restored areas jumped from about 8% to 60% compared to untreated stretches, according to findings published in Frontiers in Ecology and Evolution.
At the grand opening of Buc-ee's first Arkansas location in Benton, CEO Arch 'Beaver' Aplin III told a crowd that included Governor Sarah Huckabee Sanders that he prefers building stores in 'conservative, business-friendly' states with strong workforces. He suggested that expansion works best when supported by state leadership from the top down, implying the chain may avoid areas where it feels unappreciated.