New top story on Hacker News: Understanding is a poor substitute for convexity (2012)
Understanding is a poor substitute for convexity (2012)
106 by alrex021 | 55 comments on Hacker News.
106 by alrex021 | 55 comments on Hacker News.
FOX BIZ NEWS: US West's abandoned mines hold danger and, for some, thrills
US West's abandoned mines hold danger and, for some, thrills Underneath the mountains and deserts of the U.S. West lie hundreds of thousands of abandoned mines, an underground world that can hold serious danger and unexpected wonder. via FOX BUSINESS NEWS https://ift.tt/2Oen9vy
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