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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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: "660897.mit-edu.top",cType: 'managed',cRay: '90f172462f06c99d',cH: 'YSAU3q41NkQbRb7belRDOfIUL_6tvQ2v1jakSSdonPc-1739078805-1.2.1.1-PnQ7ilqdLdyZVzuCdym0n8wPGJt8NFyCbGFZcAZijmtmxVDPTZ6Godl9ctn.6UE.',cUPMDTk: "\/post\/3214506987?__cf_chl_tk=80xqJUX11Vo9bAWlp4CFj8OaN0WMkCEF1BY5b.ojybc-1739078805-1.0.1.1-1YZjqhfk3s9es.vJo_qmePUA27JiYZ6RFHVa0WKKx6U",cFPWv: 'g',cITimeS: '1739078805',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3214506987?__cf_chl_f_tk=80xqJUX11Vo9bAWlp4CFj8OaN0WMkCEF1BY5b.ojybc-1739078805-1.0.1.1-1YZjqhfk3s9es.vJo_qmePUA27JiYZ6RFHVa0WKKx6U",md: "61N4H3qmhRDM33XDxtE53W_.dlvUAmj5qNGRh6xnUvs-1739078805-1.2.1.1-NQ4ReIf5mfVoS0ciGxYh9eyRE9kRb2dVfTsYKCdGNqdidUIflbdG8H6VALUPMM.b.Xfy7j2UdYyX9x9S8cZ3KRQg7eBcVCjzo..IVaImLojYuAn1VlS7KXxF3hZo3H6vbUkUp8IabCABLUNTmsajGbDPbl65d0uEC4pbMDKog9SxbE3Ab8Uzcz1NGGsy2zXbiXSfXxJrCstY7I9KKzk4ReFUHz338Xn52R8oY8nqFcEMqGqY4.xkerHbavsySUWrZwvjbNIgYqUuPsmRL4qHBCa_AXpYUBCKMci7VDU2cbt0.MA8MAe2iEFyjcVx8Ih7PYKvhltK4jv.IaOQloImvwVzZejugeeYD9ofX41T6DhaUzYD1u.dfOokPCs.JWU71MM4VjxQ0Xyu36F3zetcNHqezGVABKmCbenatGBz7Mh85qlBxC3_a8FmMyzIjapfigCeTr9EZ5_0r6PjWSy.e79c0Jc8zp9vfFOtoBnAnh2bE8bBxGSPLpPyRPN.Gb7D1MBM8gVyARmpOVi3uElK2CFkKITP4j9ohemOoCS8wj0.c9cgisqf7MCg2m7iQE_SBLTL4apVrmVUu.vBBMelC.U5.KUUonDw9Ulnw_JQW6OBB5mbztGOLBhe3jkYk5psH7OVsXWVvUUIpVlfhfr5NnEgt7EsDgayaUXZP.3OtjAq1DlyZeaAw2k0i.64NLrExPg2M8Airac1bNWIYp0ynlF.t1rwWI0YMw8whpyFCffSTMjCSAy.GqyYGpQwHZ52Y_2iw2O0d2Z_MiHZWb3Vu01hVHO.zp.l6g0Ric0snCG.LtpGhTpF7gs6TiZ9nN7UJwKq38uBhBNYTHi3.m3zL9McOt6X4WwH6r4k7cFsA07_tOvlba5yP1gj0dmhBbrhMpmhQauvKg5ZK1NpPv7YUJPVniuKKtErZZMWWarutRtmUbvW9MNtZcYJ1zYwyYMO6bFM5uBiWW_.GUsmQ2Nz1moJX7byBmZo46zm8_c281kTZ0BuWKFmSF.3cgxIAWiS61k6p1y73eCZhGY_K20LDeLSvimOzo_Bu3D4bBf7fXck.u6XsyaaAchiYZ24ZN7wyds.Ae_rrsn2jm56BNozEEoCGGiIV5Q3CpiFhtSpjp2aRuusKcxRjibrHT9UawaBmCC5VWJP4wVVulDZdoqmW.oJYfMtxTrOtDdVbEWgTPMMsTXqU_SlWj033mao2I3rak4UOJZ7ASa14h8zsQ0zc6Lcwyp.9nP3smGZRbc6NGouRDT_XQZbC395nCF1ww.73csgQ0qKw1G9kCyoJcdPvMpFNwzQpU5wSfr4zZAkWtgXmWA5ONIo5cXfjjRziKczZsu7KE0y8FiHXC5V.RoFq3dG0U8NmaCgLAGWjYEI6riA34TslVNZrslhTUJuwZA6GzrEsO27lybNqjwbukecGx0vt3gxMnwNyzFt35msqziSrNzNleiKwyWEgSMikg4CJh509IYasq7.1G.QqR_7Lpv_WUAyIpkj1Y5nHNUPW_B2rlanF4k0sL6wthSK6zJeMm7RoUqC3VZxkoKVotsO6LAuAWavM6pHqxdJCYT8aPjVvflwkv0N2oTUVhUuT8ERUX7s9Uf0Zzrfv8d038TAjgWqRXGXchAl91qoiM20MHXKLqik9Yqm2pYcgbu8SVgW6T4PHw4FBDHxQxs.SXOL6ZVZXStih7SU6WJnHsP1d60shKRt9IAntvPDjcNKWQzWa.scpbqDPGOkL2ejaYmNF3QK0Ru3CSUGPthtmpDWkyrUd26QMKJZkrF1ImiRUxsJ2hPCH6T.sL_O6NTToDAGOWoZKFGKr7wam_QfVkUpFsq3MSAFeHu_IlnfQDtiYeTtAeaKBtctmL0YosSEw2gJkbuOdOGT.d7yEtmzIPDtx5czurfkcS9WYoibz5oaI9YTlEhMC15Vk5a6O04rDyqZwRtzyYcU5XbO4VFyvGhY7FCFSz68HKiLXD9fe2WQD59hAAl2e.UbHUBt6vr7wKneoibk9aSqQ.zqe9KI0D3cQYnzl85fdpb.Q49pTQiBVIK_GKrsFx5Ok_1ovxycM00H.rcl4HmwZ6P4fFUCZvILopq9ZowMiqX4etWYJ5JeIeqFd9AUkoRvTDyCrn9_FZmtirWc7wRGMm684YC42QMCR3V6Gq006_Mr0TpGBzCFJtJ1CYB0gdQlzasSqVEAqyooq5F3SigKLAObH5N5nbrIpnw",mdrd: "bU6XHYsPwlF1ufqhDfMc4FRJkC051wh9LTc2akJkWO8-1739078805-1.2.1.1-R4kteRvCMqhjojCrQKJrtXlB9bPl2AjyYWqK8Umda9_dqc_t8NS22b3AbZ_Cjf7ObeDPiLQzSvZfaXIUIyidFqZBMUtaVt0MH4ohQofKMVGCxKVnhrDU_N.CNOOKJBppmaeVg2VxAH4rJxzXsm.arzh_IdAUxKZw0mhtTGd1o2ZznoCzO1O1foVwRHF8rgc0GoobdRzF1oQc1vLK6GncGCxY.RQOmGuHYCunyKXimlLfpwNgy4lLCDropArz61V_urCekNGe63_ByJmbSxP2y5iKFh9nBAd_yO6cjMc2BzGRGLbOIKdu4bHqUvQPVqXW3eR3vSW1I5WUd6Lrj_mn4slJ3_83TGxwA_ynepdDAL30HVclDHO9yGV8ojsn.UuN23Y5uX1P8JPlO.NXlatN4Ie79xvc2SFmlCSsfRCLL1x3shhBXxvqxTiKvzBqQ2fZ7wkkjPIwyDLwoZsOfOZ4rEc3onVdsHVDhkTaULcnyD4HDs9boZZZfvAKOrKlZLh.WL7qKXXyUvTuFl8_pkkEAYsHAi2lgu3Tow9kvXZAlcELHM3AgQiglQ8ptce.HJlKxkXwJfKv_yGGWGywWfAH1x1rXzxKDqBd8WiIV1g14rNB.08sr9IZs2D9_K8VSlzEHDy72t0nhEGOV7w6qRuit6j71mCdKZgcP2wdGFucUnqmRz.mo4_HclpOtq8wbw9B71ysHplr0p6A51e_VxssFnxo2rhe.ZuGNDn5Q6nXtUFfX3HAXcNtxcJJULbyDAGwtxSdt_ZzJX86dTUPuNqxF1fOW3cpyEoPLzv_sf2Oz9mBcc1CslXhyiSB28XwAkmnIEvN7uZxNs3_CoDvD9KPwJ4XhNtTx5EUnTylRpaU3fF5CEJ.9scY0H1gNgQNLL0f65el2vwyJeHV1.XZwxBFMetOs1U_xW1nOT3IarB5PqEsg16m3LJZP7bwTZWzGH2B0ewVDVEPsTLMeksMxCrjec7X5zl0ADMouh5AHE8CPJlHamfAiPhydZJUr6boJ26jiFnO8kp4gi_4qY_o8RUx3zSk4tz9HAwG9XQrseDA2CtI.Xb0hCOQ1BfvkMQGiDryOX66pCeJ8JafGAKul3ANBaugzzLQJpEiFCZTUrpXzXey3o3KaR3hutoqFz29WUInCpHqV8ql2QLcQA8q41taNLtYjVsfQJLLyFZRacbF6FGG43z6cZ11obN4a8r86AWHibMsme5QWqA99lnQyHQXIAp3ME5ktzg7bOemHQlteytZUzMbyGHLZWXxhPNWD1PE_mXtnxJjwi6SaLDU63ta2tV.y2vMFST9aWcC4pPJaKq7q0xIVkXcuTFDYBWbvpnnauS25U6nzOa8s.L.BitXOUz6yaaZ0.kD7UP3sKRntmTd8ui_sIuzJd3EhJVTCO7fCHe8H3HuVc8a2HP9XmPzvAsyQHOq2jakXK3IcAtb6ptOh.G4DsaKd7i2pE9i.AF4TnUdsvAlO.RnqUzWhgeaiYqByiCFtLIFD6Ku.s4Iu38jwPMkLEFpToiWWxu.GPlsZYj2UrK01Aq5Gd65BAuB710QXEYtdVsUj.H4yG191rV1jg8gapntPzN8ZCzD0uLqNtkaWN.2qXCzscR8_1poMBrzgi04Y2buYzS26JuCK4y7oGRyQ_E65I7L7oc1X3kHatdWPwLKClo3y3g4A.4kt8K5.hAB5.RhX2TCnOmcakTG4CJi9ml5TWxz8WVDAJOyngwlF32maHsJskY0wxZ5F8R3BfARLmLqGlVC4tAtbMFaPTg_kaIhDqkI9CMiY8IKA2BGgB.0lyUSvMI0R.p6_w"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f172462f06c99d';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\/3214506987?__cf_chl_rt_tk=80xqJUX11Vo9bAWlp4CFj8OaN0WMkCEF1BY5b.ojybc-1739078805-1.0.1.1-1YZjqhfk3s9es.vJo_qmePUA27JiYZ6RFHVa0WKKx6U" + 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