| 1. | | Filling hospitals with art reduces patient stress, anxiety and pain (designweek.co.uk) |
| 502 points by rchaudhary on July 31, 2019 | 143 comments |
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| 2. | | LightSail 2 Spacecraft Successfully Demonstrates Flight by Light (planetary.org) |
| 640 points by spazz on July 31, 2019 | 144 comments |
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| 3. | | A Raspberry Pi-powered live train station sign (balena.io) |
| 642 points by chrisys on July 31, 2019 | 141 comments |
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| 4. | | Math Basics for Computer Science and Machine Learning [pdf] (upenn.edu) |
| 883 points by oldgun on July 30, 2019 | 118 comments |
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| 5. | | A Brief Guide to a Few Algebraic Structures (argumatronic.com) |
| 266 points by edgarvm on July 31, 2019 | 47 comments |
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| 6. | | A Look at Overnight Stays at US National Parks (jordan-vincent.com) |
| 318 points by skilled on July 30, 2019 | 98 comments |
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| 7. | | Tree planting: Where can I do it and which type is best? (bbc.co.uk) |
| 302 points by pmoriarty on July 31, 2019 | 210 comments |
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| 8. | | Equifax removed the $125 claim payout option after millions submitted claims (twitter.com/laurasullivanpr) |
| 600 points by pavel_lishin on July 31, 2019 | 441 comments |
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| 9. | | A $5,600 Electric Makeover for Old Diesel Cars (bloomberg.com) |
| 254 points by rihegher on July 31, 2019 | 194 comments |
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| 10. | | Kriegspiel (wikipedia.org) |
| 291 points by tosh on July 31, 2019 | 88 comments |
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| 11. | | As crime dries up, Japan’s police hunt for things to do (2017) (economist.com) |
| 201 points by tareqak on July 31, 2019 | 336 comments |
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| 12. | | An F-22 Raptor’s Crumbling Radar Absorbent Skin (thedrive.com) |
| 194 points by Alupis on July 31, 2019 | 238 comments |
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| 13. | | TSMC Talks 7nm, 5nm, Yield, and Next-Gen 5G and HPC Packaging (wikichip.org) |
| 176 points by rbanffy on July 31, 2019 | 77 comments |
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| 14. | | Implement mechanism to wait on any of several futexes (lkml.org) |
| 244 points by yankcrime on July 31, 2019 | 154 comments |
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| 15. | | Advertising Is a Cancer on Society (jacek.zlydach.pl) |
| 692 points by TeMPOraL on July 31, 2019 | 640 comments |
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| 16. | | Web Scraping and Crawling Are Perfectly Legal, Right? (2017) (benbernardblog.com) |
| 204 points by heshiebee on July 30, 2019 | 125 comments |
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| 17. | | Introduction to Bayesian Filter (leimao.github.io) |
| 167 points by keyboardman on July 30, 2019 | 7 comments |
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| 18. | | Amazon as experiment (ben-evans.com) |
| 185 points by notlukesky on July 30, 2019 | 65 comments |
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| 19. | | Stop Blaming America’s Poor for Their Poverty (bloomberg.com) |
| 300 points by stablemap on July 30, 2019 | 366 comments |
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| 20. | | DSVPN – VPN using TCP at port 80 and 443 (github.com/jedisct1) |
| 195 points by northfoxz on July 31, 2019 | 110 comments |
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| 21. | | Elementary Algebra (1971) [pdf] (softwarepreservation.org) |
| 127 points by tosh on July 30, 2019 | 4 comments |
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| 22. | | Launch HN: Hatchways (YC S19) – Internships Instead of Interviews |
| 267 points by jaclynmling on July 31, 2019 | 81 comments |
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| 23. | | The Moon is older than previously believed (phys.org) |
| 123 points by dnetesn on July 30, 2019 | 21 comments |
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| 24. | | Amazon, Walmart, Ikea targeted in University of California light bulb lawsuits (reuters.com) |
| 131 points by hhs on July 30, 2019 | 95 comments |
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| 25. | | Graph database reinvented: Dgraph gets $11.5M to pursue unique, opinionated path (zdnet.com) |
| 189 points by bryanrasmussen on July 31, 2019 | 93 comments |
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| 26. | | Building Payments for an Insurance Startup (moderntreasury.com) |
| 133 points by saarons on July 31, 2019 | 36 comments |
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| 27. | | First Programmable Memristor Computer (ieee.org) |
| 95 points by headalgorithm on July 31, 2019 | 34 comments |
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| 28. | | Marvin Minsky and the Ultimate Tinker Toy (tinlizzie.org) |
| 93 points by mpweiher on July 31, 2019 | 4 comments |
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| 29. | | The Origin of Most Coal on Earth (2016) (nationalgeographic.com) |
| 111 points by lordnacho on July 30, 2019 | 66 comments |
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| 30. | | Espresso Machine Powered by Tcl/Tk (groups.google.com) |
| 136 points by blacksqr on July 31, 2019 | 43 comments |
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| More |
