for Atom and RSS and KML
It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "blog-afffvmdeg.mit-edu.top",cType: 'managed',cRay: '90f4611deed00957',cH: 'eU9yQqIeFiCXpV19ZK8uMGFBnmScCV84OnHgVYMiG_8-1739109559-1.2.1.1-CztR2Nz7gjWP2Brej02NajfkwBTEJeFrnwfKuM.lhuQjA2L5AIvS.Hh3xY_drct4',cUPMDTk: "\/post\/1857460923?__cf_chl_tk=EbCOg_giAMy21A_G914PAEAb2QjkUbkXn8UJH61L8Eo-1739109559-1.0.1.1-WSMadIPn7xzP6Xqt5pNfR9vIlrMEGd0_JQmBNPAOBNk",cFPWv: 'g',cITimeS: '1739109559',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1857460923?__cf_chl_f_tk=EbCOg_giAMy21A_G914PAEAb2QjkUbkXn8UJH61L8Eo-1739109559-1.0.1.1-WSMadIPn7xzP6Xqt5pNfR9vIlrMEGd0_JQmBNPAOBNk",md: "yNOJlkW1i_3G2YXYCORe887QDH6qwPEajM9Gfc3eRSI-1739109559-1.2.1.1-Vsjbj7.9xSZd7NhoQY727M98HYYodOXg345.05LdxrIt8cwd4w403159miQj.Z6VKjmGdwTYQMifiyv7vj9BWMZDNwet2fo.qXVz6QuPPOBNBHzoF2YVq0hXzlr.n_OE_fHTX67tNZas3PRu890EZwekKKhkkoo6BxuXWp6blqcXZzQMqrGwioeMwdtIEeZgcj6jRi1z3M5.IjDEVqAAS.86jzoF_Q0LAfKlLwqLlc9A8QE91GFp8XwNVcYCtztgX_PeMXirjwbm00CgvAvXoZlkW19t3XKPWHrsG_eLECKx_FaBnRvUahK8Pvnfb4h3bVMOAPU8g4DH7Xh7KNoiL4JGvBfTv9NcSROlFvo.87uzf557IhAHKsZ..TXF7YpV7N1x_xkCRLtZNRkZyi.slECYaVorLKdEzLaC39I3x3cyg3_MYmRxCxdZJh_wRA2INeXOjJOfHZK6Kst.DQWa1GFdQJ8JePhmWFMp.lT0pExy_C._vANdPabRB4EKFL3V7tmFvVF0JXNupdGhUx5WzFOyTI6KhZtovkxvI8HvEfy69X9PgNu6OKMpsH5qzca0C2ab_x8F21aAPm6a43C2HW9gHG8v1d0fKZfKn62m0hSVr23yr4p4jrCPw8olwbQ0HPyLzStBu5cW82vVCGWVrnLHho8GkXXjQKidQdoJXt6xLTOJ3XfDXHxGjqly2rC4bb8.jcKwkU2zvXprDYnN3vfMb1GK4tqLOldP2hoaDFvR7MEQCTwKHR4RkSuJJJBLq4y86kQcuzdH9LirI0SNaaR6aSiviqXRxjzZh9Zp3.bVgqItCc_NfuzFfj2wTOodnDk8yMfENEtvLYjwYM.mYw6NNh7U.NsjxVfhG.x8tyr8_foG8aEvSRyEiDdZ_YmDe1pQe_cVnVBPZPvaqLFR.noTdg8_WZ01s8MQh.S.8N4lSObx.sr_retMHZgRDJZ7CPjpR1MP9jJh8JgrpX24RaGLrEkmrsw6LN6b_8tpMkfaW29uL1Yj.Q0p92tAyLsKBEIKfCDE8ESOMNj6vD4cSMbaI3b984F3UrYC7Tnbsrbuh_OwhcrqvfPMiZffdHq.V97h4aIDN.3L8ncUVSuXNF2trO05DqFztdps4e2r7aZEYujtPbgZpXfPqJoywdRLAnwpVUJ3Wik7KQzujzrWxnQxH_oAJQgKTWBdmbbby50Z87TsOMtlv.IPtkPCwzFY4a8yDvy5PyXeXNkPuuGAbMAtNJVKkVoyT1q2q6R8IY4aO4hnZoDyOZn3XmVjmNrQYc8heUC5J1VKee9j7q8KLfWObp1ltqPy5Oz3JFbQRGcrroPgmpxRht8f3Ym8dQKFX3_8eNpW338lhK2xFj7YTuhANWfvdTXLcXvXoKW8h075JDz99GqGSbR1DHkg1xwzAnqKlbr2X4IALZJkpga6N1vUkMXAgQfcAi5o9FeVe1zPHPecsDXGjiq8_qZgPoXFer_33Xj6.PQRwhiDBac.PkrWQ4hidQZA5pL72g57arCzioLNhcHB1rtMDjJn8zi36OtvzhFhLm16.D0gGGm7Bk3crgHyEt2Lw39Hy1pFRo.UlDrtn6IJQhvQ.hnw1ASgnmtRh3LdmS5GO7ZFEyDnANDRY7IEGbWhCSwnJxVhQ9GnpWC6uiteA.hp8LrddDROBStq2tNr004m8Nb5bWWcwnfJhL01M13ULMyU3LST4XZ3_0U4_koV8aLRJqarQSxcyk8j.CrU_8SguaUVxVNQVEIKlbmn_oTyhi4mcL4SwXbRv1nNIpsWvnnyq14DPZ7R4fO_Vix0jiTTamzwBTWKq8hyaoScm.zihTxfvDCDqdcI.lQo3v1EZ_M1bOgCymhYJwoYtNpKxdu63xE4naPUNvvowUlZ.mWqHG8M1QIlTwCKZzHj_sfV5TzDtj_VUVoTUeDUVclh8Hpk_3OuSVc_NS4A7Ss8U3c1QzYgwaN7Vykj1Pza0MBrHf2CmFueqUTIeKCNlp8Les5P4asNgS.d3KArEv.hSXXqNJbvo_GFrknq24KnOv6KhlgtPW7g58s8BvPHAUPVQq9Ek_E5Nhe_40XDIn.vatCGMKLaCvZfsQnpU1EJn9L8brcI1nnFt06IPpPpEkFok8hEqfBmHtNlkEju5lGHEOafaKv35zKv6RDZC2Kk5qw7siD5vZe1YTlZv1cbeubk8r7EyRq4V0X.8gfOkzxaEmI5BxPiV_Lvwr2qoahaBITq5GTtyzELFsO9",mdrd: "teoJwXS8zXQx22Ng_aU2PDHcfKV7.ALZtSUsBka.UPk-1739109559-1.2.1.1-U15vWmxJmVMdEKrlKFH1ms0F6hUX8q9uotFlstM1_V0BkeT2ISfCxtOEGn1JiXMTB9wyK_aZTL2NT.e0x3n4eQKyhpO5ykirGyWnvWrT94yiFQvzSyPLB1xov2bseAUr8TibudAad5z1kZU8ElamOnsSPe8u8Rw9_mGa3K1BFhP_A7cw4VJOw6D_tdXi.zjRNkIpx3vj8QCMgYhhPNZDe3LBh.huF8Uwbl2wogyXbAZ1R0FahcCzg50.IUo53Eie6DUPzpwXGHYVHvR_yOOZrCy6H6tX.agJeZIaidGcEwh5jRrAJVxD4iVjY7ZG6dmKIZWaObAvvvptzigutCqm3ezWIitGOrH3lj8mNMxj8eSd2UO2esVOfcS2hVCAc8VKGsEMLjPe87KyLe8E.eK1kB7bHARvcc4A576bervEY9tlhqjT_izAdUDvN99KcTeqw4RLx2zcRTvnhauRE8rkG_71wvIeDSkAHrtYzmuv521Li9pR7TpEAbYwgibVEtGjbpKu9gWlb.Zn3Vn.kWHFEuSy5ZgylbFr6vcwzf9QW_lpSntscfZLc0JPMjKj11ezlW.PzGCWL1JN7T_Rn8MzHUYFpie5ggE_IYSu7Y3Il6PSaYv6XXznJ4Q.wJU3OlbQ8_KWMDq29pQ6LzAcmLf2xCIqkgyu5OmyZCR_6.ouBeHbOM_SM9XAHDR7h2rhAwItYlCNj.bSdQ6Rfh6bAQn0QfhWQT4BqrWfJyQ4dA3JtrxWHlyjwqgeoWHIs6Xe6xwCS9YpGEhNZMRWPPyTvbUO5PCo5yWEHw7ePL5DJ0Uc8pzvryuqQg5_.7ND7ZYloBEqdikbOMfM1wUWhkTskWGnmoUl24Dd97brtHgmbqzS8nNZSfq_.M8VltBcJ_uhoXOyaYwEPr9he4awHQqAVO32ZtVC5NDb7xeBae68GG0uIAPoxwcsuAKdkpJUvjqJq_aUAZKCTdsXjdd6hilwE2Ok9E44Lm37jd4VonC6qVvvBnZgRCtEiyK5DE.jnnrSsDSBgY44mBFooR4TW2QxJx1l1GjaW1wT9Gb1JuffUFiyiDq2aQb4Gkm3_nCOhrrcOkCBPz1iT20xREDy7IrzicRxshSd5DkqfvlXOfKAEKdGETLk1_cWGn4SD5y5vC8aqfHkmKuooQt9HcqP9eyKRGm5jf_76TiWOqru9DjVUeyTPAo17nHCDe6D0mPHvDua3NS.HnfhhiCiEtKwXCevgoIdboOX7.mfHF143UrwI5hyAbDmgQpQlGcYJzff6UTXqyDLmPQKT0gmn5v6zsUmmD82oPcmiodr17UID0neGjl5nWGuMMbNe_dxQKzn0wU5IoAWLvX9ozvEv2JkjV8029T_pS0STDa7snJk4iwlcGruBcvXEJUqgdMRAA01B4J_Gm8Ed0eC_IHZ3ERPXJ8TP7eu1V8gcJi9JKRIsuq6WziBb0tpunb3xP4.9DWEHbZRKgDTXi6HF0m7BGAEqMmuVVvLMVcEIA53xDcrNNCaXa89ej5LZSdd5RDipjHLmO1lAALEbT.m.sR_vKnhIrVlco89U6nObEznvfC8i3v.P6jEC6ccUN3w2aGiZ7gwqL4jtTM0n9U3HjtfqQyvULFdxBCavk7tQDRqVtQBG.jtzhMDm3kU_RGU5WBHn39mnTyphR1wiTGIsaHztlFDttaOAe_OiOpAJKcjHCArmnBsym8RrCtDCrXCZIUskqSqze_ejkdvw3Igqpk3WINaayUD_XLCCwAi_iLrAi34qcUbtTPR0GX2zgsOdjEIWxaDlRTsiy0XZ9nkaKjv7N28wGMGotQxLg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f4611deed00957';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/1857460923?__cf_chl_rt_tk=EbCOg_giAMy21A_G914PAEAb2QjkUbkXn8UJH61L8Eo-1739109559-1.0.1.1-WSMadIPn7xzP6Xqt5pNfR9vIlrMEGd0_JQmBNPAOBNk" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Home · About · News · Docs · Terms