| 31. | | Sysop Chat (bemmu.com) |
| 110 points by bemmu on June 30, 2019 | 76 comments |
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| 32. | | Interactive Zebrafish Brain (medicalxpress.com) |
| 37 points by lelf on July 1, 2019 | 3 comments |
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| 33. | | The Long, Slow Death of Venice (bloomberg.com) |
| 133 points by pseudolus on July 1, 2019 | 148 comments |
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| 34. | | Scientists are searching for a mirror universe (nbcnews.com) |
| 108 points by rfreytag on June 30, 2019 | 61 comments |
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| 35. | | Google internet balloon spinoff Loon still looking for its wings (reuters.com) |
| 63 points by doener on July 1, 2019 | 69 comments |
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| 36. | | Billions of Random Numbers in a Blink of an Eye (dragan.rocks) |
| 89 points by tosh on July 2, 2019 | 24 comments |
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| 37. | | Mozilla SSL Configuration Generator (ssl-config.mozilla.org) |
| 172 points by ingve on July 1, 2019 | 8 comments |
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| 38. | | Antarctic sea ice – rapid decreases, reduced to lowest area in 40 years (pnas.org) |
| 130 points by alex_young on July 2, 2019 | 73 comments |
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| 39. | | Launch HN: Carry (YC S19) – We Book Travel for You on Slack |
| 158 points by tejasmanohar on July 2, 2019 | 124 comments |
|
| 40. | | Show HN: YouTube-DL GUI Powered by Electron (github.com/mayeaux) |
| 142 points by mayeaux on July 2, 2019 | 138 comments |
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| 41. | | Exploring alternative funding models for the web (blog.mozilla.org) |
| 191 points by blueant on July 2, 2019 | 98 comments |
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| 42. | | American Suburbs Swell Again as a New Generation Escapes the City (wsj.com) |
| 94 points by sndean on July 2, 2019 | 206 comments |
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| 43. | | Superhuman embeds tracking pixels in user emails (mikeindustries.com) |
| 467 points by minimaxir on July 2, 2019 | 241 comments |
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| 44. | | A once-classified anomaly nearly killed NASA's first moon astronauts (insider.com) |
| 85 points by hsnewman on July 1, 2019 | 23 comments |
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| 45. | | Ask HN: Recommend one book I need to read this summer? |
| 341 points by chha on July 2, 2019 | 296 comments |
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| 46. | | Documenting every apple variety in North America (atlasobscura.com) |
| 44 points by bookofjoe on July 1, 2019 | 5 comments |
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| 47. | | One Program Written in Python, Go, and Rust (nicolas-hahn.com) |
| 215 points by gilad on July 2, 2019 | 81 comments |
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| 48. | | Hypothetical Indexes in PostgreSQL (percona.com) |
| 98 points by davidquilty on July 2, 2019 | 23 comments |
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| 49. | | Chinese authorities install app on phones of people entering Xinjiang (vice.com) |
| 307 points by el_duderino on July 2, 2019 | 292 comments |
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| 50. | | [dupe] Decoded: GNU coreutils (2018) (maizure.org) |
| 240 points by mariuz on July 2, 2019 | 2 comments |
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| 51. | | Cutting through the smog: making an air quality bot with Haskell (linecorp.com) |
| 51 points by moleike on July 2, 2019 | 11 comments |
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| 52. | | A technical look at the Dragonfly Titan mission (orbitalindex.com) |
| 57 points by tectonic on July 2, 2019 | 14 comments |
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| 53. | | The Backbone of VHF Amateur Radio May Be Under Threat (hackaday.com) |
| 220 points by Errorcod3 on July 2, 2019 | 65 comments |
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| 54. | | Endangered Languages Project (endangeredlanguages.com) |
| 49 points by sndean on July 2, 2019 | 29 comments |
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| 55. | | Why is collapsing a Hacker News comment so slow? (github.com/thewarpaint) |
| 190 points by thewarpaint on July 2, 2019 | 116 comments |
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| 56. | | What Does It Mean That Quantum Gravity Has No Symmetry? (forbes.com/sites/startswithabang) |
| 56 points by espeed on July 1, 2019 | 14 comments |
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| 57. | | Tesla loses three vice presidents in a week (electrek.co) |
| 147 points by evo_9 on July 2, 2019 | 161 comments |
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| 58. | | [dupe] Chinese authorities install app on phones of people entering Xinjiang (nytimes.com) |
| 200 points by scdoshi on July 2, 2019 | 5 comments |
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| 59. | | An Open Letter to the Go Team About Try (ardanlabs.com) |
| 127 points by ingve on July 2, 2019 | 111 comments |
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| 60. | | Patrick Collison's Bookshelf (patrickcollison.com) |
| 148 points by rspivak on July 2, 2019 | 19 comments |
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| More |