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-828103176427.mit-edu.top",cType: 'managed',cRay: '94bcada688dcc993',cH: 'ahQVpduXuvQ4PD.vm1RLn4Iuw_3444fW9TLgdiEZnL8-1749262910-1.2.1.1-R2bRYMFhyzBfZrDmPFT30zSH7fwPaYNp17oJzAkdF9kj3kc6chI4lK3Ge_AmUBZm',cUPMDTk: "\/post\/3481275906?__cf_chl_tk=fVQnvPElOYs1ZHGvpgrtRlSS6IThy4QdrI2CyRvEGaQ-1749262910-1.0.1.1-b6wKttjhk5tnu63GDEmux_TT76pF5o5LMR8wQBF3Fis",cFPWv: 'b',cITimeS: '1749262910',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/post\/3481275906?__cf_chl_f_tk=fVQnvPElOYs1ZHGvpgrtRlSS6IThy4QdrI2CyRvEGaQ-1749262910-1.0.1.1-b6wKttjhk5tnu63GDEmux_TT76pF5o5LMR8wQBF3Fis",md: "XnYcZo6XMx8XjrcdjWKHGjXurSlblKzWZ7oCdOq.VeY-1749262910-1.2.1.1-SNIKfwJrLy81bgvM5xBCa8RZdGnVXrTzo.nw.pvmDR2.y4gHWDWc9f24cWstsA_anLOsqRME0HcrukIo6Z6g_9fGQdpdIBeGJsu3QPGfUJRFphp9UTx1muNBKZAl6jK4MTMWci2zZZ2FHzgndhNsQqFlX5xWhqmR9SPFilHf.QqmtZ5MkIdWVn4bESO6XcrkLDCB7M5HAdvLXefgG2NtoT6IIUel9Z4WKwbh7Me3brwhZ0Fmlv9rNU9d_6G8VuplNaffTnEKp4KvCcBQ82IQ_QJs84xqKvx6.rZpEWxaPAA08z6ANd386CuVHNoTdHTPq23zT4WboigZRf5sro6Sxd2XnO0pVbXAzZi.vBuA4SBnjPpgXe5ImZwip9i3.3X05G5phrHYNwlDBdeGdAB83OdUYz0lAFZA3x_bgfNlTBo3FtalsRdbF7.b96sCWvXHZOY83NKW16bpuJGJy6KqaxgR46nDEIe6YWb8K_qb17iusDj.ErAwm9pkd2_kVs6BdscD2MOA3.qItr7md1XljOWXtsXKMxPJV2ccsyYxwHRIf1WIVdDxEEibx3ql2auYTDyLxvIGZPSX4te1EtLRxGMkyPiJBGBSeckLj10Z59KuXW3vkeGHQsgOyR.R8VbYWnJV4g_w_GHFcJ56Or1dRE6GLOgQY46hkzu8JJuPOqjcknNNvJugiONeIs3MhBZZ2ToB9LsKfT0OYHaEIA6wywcm9Z9kweO_vk.lgJRIotoCNMCO618MfGvZG.wrbpC6WmjrfUXsdwbFHevZMQEuHqpndYW8nKDTDedNOBGdkWCg3dZpwa1jF0k0ROJ8fgISGCn6EY2eifr6Tv0KsvAujQ",mdrd: "NzvQBc8cGzpxPbve0aM9IqndQ8GPZy9Ngtq9_tvVuqE-1749262910-1.2.1.1-jCJs.y9n1gSKTlrQQp8CG_gyaFPO.rbvMF5APcCKKAk7wa8rxSTFLv9rRPJgxEzi1A0l6HDax6fY1uvSgYYBRVwuXvj1y.sPurZFMmRfSYHh.7zo.eme6c5t6.bwRq7kgjw0hs2f7XSMANJrl8vLzrYdkBwZllZvKvAo2BADzvv4dzaceuB4KpIpwvx6TMjcwuVJWeC8TRUM25vMo.CLxMSGvvpVBs9sesqGvo.jYPO7xKEj9E60fHtuTrRUiACkmKQS1cI_X2DdPNWdXD7CPrJJU0pynZ1E8WYYxyLuw7AhiE_sCZ5fqRlfXAc1876NbIZRo5myYd56u7FlOSo3oDrUjtZ3y68MTeLh5vitAUyWpWlTL40Ac7s4DgGtRGXDMSbeld71adajnlEefgJBFiJ.89Gt_hj_ZDB_uaDFccEoSmfumqCoEK6DSE2xaZzE5DQ04VKYJ7kX13_ByTEucFQkGq_ytBmqG6O87BclQrjBGAlyu_ls.mt89Vn7yD6_tTq6Fi3B2GJqxHiPEZPbGHl2y4s43jNPc9WVnwoeoAVN2.N2k46YHwsQFPRJu4TmkTuBvS6NpVb9utjuWqxhJfFctpt1fekKVseXaxchFgt1dm.rrXvDYjzTZzWPoM4z14jJw76a0iBoee.z8DRa74eez42wo8PtYLoWKEN99EWvM9TXZSUU3lsoW8JwYfcTHEYqLhz0T8ygPJwruxVkFEJHxHyKkvjzQ6p_B4_fapHjllJXvXt10_p1rsVPzeReSAy.0HQU_lTpSr1l0MR7cgkYKAL.cZOOuX.88zlq.aEO9.dX9QtdJckZ74i_5kCo8B7ecYgLBx1ZWWbTFWpfhvAuuqDtKcqUnWYL_rVgsS_7VGkzUJYf48kWGBTVhKRAERIRSmQvhiRNPf6qdkxzcA1uVB5GyfXZyXMQDCa4P4jBOhQH6MYmBlUBHI79PmdVGwbapnKfdKUs.EJlfOmPdWRVd5PiqhzMQNvQOQaGODiyiNZkMMUE2uJhV0vK6I_c2OJks5xmw2vx8I4lG8x10mngH0BjtwQ6vcyjMg5Z489bk6sWs6p3.wfzgqWEJScoNq12VpzF.y9bEoCCYKv3794hLeFkbCkENJOOryVXf9bpviRYAigcdAPGn40QtYtPYjCXJ9eiOnu8iIaed_N2NuEUicmJXDeP_udSgswJ0UVwQpxwhTRUpE_rbNKbcy5bAaINxMzE_h2SDUWBlDzfVsxyT.pqkT3139Qum_Ymw_KteFebYTBOASklQlbTBxiCUyweLUPz0mtlPNO5hNOWk2aTHMIIP.Cd.PjQ.OtgxnYioiTdzhXT_k4gsIHB872W7K._W5RVwIDVfUnVyaqmJiRkb5HJMwNb9P1kOp4PZi1l.Wh3JUWP_g3stfmJKPGxdvW_710cMsEYhiDmtasqkgURzJ4RKxWOTIdscXZTo9mF_PXEjTzfT9iJS_MU1NH4bJMS659fMhUDYSTxwlzd2VQ_gFl0ttbcf8_2ANXcoCTGM2j7r_HiCNsaQljJ4ch0l7AVdqrui0I3vX8fZgONT.zzjIdNADokZUgITkOO0tSk5lKKxb4A9iPo2NfdfweWTLTsjAoT7GopT88sVw0cC7r9Mt0W1goixMXHZULJzLBnIAb0iSiZD8oZ7nPTYT08XDwMHnH8gYEueYlUaYxUna.BSAcB0cnRT.VFgEYc6IaAMasa0W_PpCSzKJcgyAsshbhualdRxX00GL0Up8I8FznIzO9jRxW6vJ0D9hDGvnsD90TBi1bAYbS2T_91Z7ZfqIbY78b8vZpnXBAaT0U.HJixZh6eBhIKtuE1y.8nXB6j2wUg7x_GY7MNvLAndBrMye41w0aAbP20ujh9C8ieOKNxjzLC1g8obHN5I1qORdI"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=94bcada688dcc993';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\/3481275906?__cf_chl_rt_tk=fVQnvPElOYs1ZHGvpgrtRlSS6IThy4QdrI2CyRvEGaQ-1749262910-1.0.1.1-b6wKttjhk5tnu63GDEmux_TT76pF5o5LMR8wQBF3Fis" + 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
