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="360"></head><body><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-222548524835.mit-edu.top",cType: 'managed',cRay: '94b9476c3beec598',cH: 'b_YYmb35Dj2ReuDg4pNad6fOqpqkaAUDiXcT5_HMg2o-1749227265-1.2.1.1-XV2bwGsSzyML89kmMJ.2HNN24LHAnQ8D0tEY.fYoDIGsKlfzJXvDzlnKXB.wqfls',cUPMDTk: "\/post\/0428739516?__cf_chl_tk=47d4BNlkU9kqHr5WekRaw.OmtZ_coNT_FmkECI.RFZ8-1749227265-1.0.1.1-kyFSInrZnPlnQDu0cYlNOuF.XNGo3U3pl_w02B7UUWM",cFPWv: 'g',cITimeS: '1749227265',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/post\/0428739516?__cf_chl_f_tk=47d4BNlkU9kqHr5WekRaw.OmtZ_coNT_FmkECI.RFZ8-1749227265-1.0.1.1-kyFSInrZnPlnQDu0cYlNOuF.XNGo3U3pl_w02B7UUWM",md: "sZWPmioRhg2MF1XnEfnrZIEm_vXOTa7KVntLzAmgMOw-1749227265-1.2.1.1-1M9tU3HaeQ2xHR2m4sgh7Bj4ngYrHPH4tatBmzRWOA7gPg.LVX2csC.8w7T35TsiPtq8x9Y9dd5GJcYWr8695lP_Z6B.H2Q4FZbe5at16tIvkjNR3hlECReGABUgq1JtWTqsCgwTzTvrsSs0CjKpiZ71WpJ28QOCXOAUP2j4xEbRLM2PMchUP6MCCZLDURkF5GzEQvVi.0J.gcZkZK6IKMgPMF.KVkzBHcoFgQp7bLAHGDMMBWH5iGB61jG4GpyKvR6m0Fj2B2F5S7q.GolvzpZLR5WO2qjzcdlHLvIwhe34gFAPYhQXf9XEfZUlJZ_AwMxNIQb4Xa.gcyTcKQS_B67XpkuKz3x8NH63wXZ.5Ok11G4IR8eknLTznwJt4z10472Xa66chN7s97tZ1oA0QZP2Fu9A6Tc_pLfWPPO71nYAJvnt.2dAS7MTL60sVfL4y7tY1tuT7cR2Er3OLpZApS59OJsKxiWTeXnz8kVXn2vy0yxdU.y.vO9PhT5TbCSJuJhVbTRJooCitlg8L_xgwVJYTA3Rnkx1qIsbfwb5xKcERrGhPmaYLLNdpIMl5c2gTT5zAGAziaz7Vy5CCHhnYYI9L3eszxiSC7.fhFo9EFDODV1oRyVER_dcWMR01R7XOHB1mHQOW02u5g73WHN.RBCXgmuopyeZl8LgI7Wggoof0kPSUEOQo_NnpQrDp5XpIFJH8OFNC3zWTh0sCEYn5kYXVS3xuZIqe6iVKUMmwoHVmzv0oTtdmmTEIIw_z0hOsqEcBo1ghCbhWn8CkNHZyJEPxPokUO6qybsmNhOBzTo6Is8S40KsY9Bpb20x7qOtjmMMWY94tthUssimX19_dA",mdrd: "Ng.xjuT8wqe1LLncxedwqmUJ.nHHy4pjz.4N.Lve740-1749227265-1.2.1.1-mw037CjQ.mlMoqZuhTTrSyNS1PnI4C0STCVY4WyDhE8XQdhmn6cqS9nUH5Jh6DBSVOoxqjMf7YyDjZRRq_13gbI7WXOwSL5ZFFc8cwfFbLbQy0hEnfGLDXvYRT0fFfIGbaQrqykQSaYAti8CCVXIxIw_CM8q.fyj3mvNMbGfRUNF4Qp_sKdsdLx6aiGbEdBfPbeRxkCbmGz9XNT9MtYWzaBSjO1WXaPX0JFcL6C04tUkWzuZCCd5uPuGhBkZUI6tuX4gZD19MUPWYJsC7a9tD8EP9iay4QV.LWO4IHj_Da87qg5utlxJXz44zUqsL7I8l1OaTHxxR15toQnA9JnEJ8SmgnVY7UAGLcTIycWamA.e1ejKY7PEaoMVxFEohQT_.GD64azvfoKf0HxDUVaHjRjWcll3usSyvVNRCrHlQ9fuoQWhEeIXDLvwOTu1EpUOgJok0O9c1YvoB7sY8QbJh56bdSrHQi.eJ_HNeTUJmt.TiBzofhE3HinWXg7.fodmOP.5oUBeuAyV021qTMRkwRYs421.qcsR4INMDQW4H2anbhIBwYEIhc2N1ipobLvpwW.sB6S.mclQt15ykgUC2D_hG8cPtq51m1D_jgVaAhrvOdEhjJbIApizm6TLb6ta52N0VSirxiJFOQhDMoxIxcg.KksEuQhteJQgs_syBk8WsAV6j.tGVv6_cxulcSmeHG9g.NL.ksQfxZRDGDc24LswFLwlbZDcFYZnTrUwE4krOGMqKpBwpkK6y8XOfsqzFXRDlZTNAJs6SEEo5ZPgifmoi0i1eDXN1TGF4WS035PP2rOMdB0BRGjYi0TfaiqN82jmrrXsDiLmMs01Pjqdjln2Lh3H.KQaoVIQ4TEtEm38SQq1lYm._W94xho86Ar1uo_IcfZZwAzRf4caKf46yStyGOzLVErjeewwXUxfOkaxdEM_4qUD8CuwiGi8oAyohONsoHIS.YzFktXpFHA1U844OW5KaJFkeYSkls_6gIYw9nwCyvF0_gRgv.PvbugY0MANX3GcuJdVuUaxozzDR7nPRQ7TpqXaJzyYVZH5Jsj_QAj0mVkvIfMoh_mFsTtyP3kUXx0gknbD7Z56GcOZqiu8rtiocRsfVBGO.whFNS6NdUDi9OH5v3tXWHiCJOAfTNafQnQQw3EuZ1HD8XGQ1Lv5.YHZphhRRqQ98hnwn6.vymBPU1n54YWsF.Fnymdliqf8uFoUacApv0i98alDHsm3HDU5BaNLmN5bXKF_iv0F8TqjHqk_UCwIT7.ibzbN3RVMDkT0D50Z7N_EtCnkS9R9jfpKunJsEZN90.thnepcEuMB3B8Tx6XN_B0Z00KO3qrKYnKd7HIyyaqdS60bGR0z2yZzMzRQzkmlAlH1LK.CS96FBb6lUOIf6q3MMXTsaqxuqsgaTzTgGExSuJQC6zrr_sS7Hhq3Q9ZGpv7w3O_tEMIZAnnxSCR06NyaRig.v2iuGsl8NwRoxMExMVj0ygMl1Di_oe6eWJOIpRd1mJ1xq0rzE4adtSdoPsurWnr1zcmoo05Dg0aOLryS4bjPXknUwNNPY4qLEHlNsRuXvjwXGeZZFO17ZlkCMpYlRDPffvHfeWC3ooUjMJxxWdcj7JiOku.0oayvZbzT0eoh4JkH5jao3hKNiBZ8LU9E166w2eOPSRDDh8ptyDdynSydlmoP_VRnjHNdwt3Z8_mR1Dx8D8j1yE50fFvZWSHI8vyPV_2vdUgbF1LNQf1E9ifGZOpWMZYsYu2XqWeraK6eE4oD07ovEcHP4veGnrB2Gh3ty45ZiTHB_Mn5pMcAj7gzlHaELmRSv4ZZlArkQfvHYb68n3dWpOdAAbtxbuPKiYOEBhSb9FTKNCOhYLaUiUuRf7JMmbuwMp3SFeDk3mRH548"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94b9476c3beec598';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\/0428739516?__cf_chl_rt_tk=47d4BNlkU9kqHr5WekRaw.OmtZ_coNT_FmkECI.RFZ8-1749227265-1.0.1.1-kyFSInrZnPlnQDu0cYlNOuF.XNGo3U3pl_w02B7UUWM" + 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