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-138224570437.mit-edu.top",cType: 'managed',cRay: '90f80f62693c07ed',cH: 'H2y.a0olNPghh6XRrt7YFzNMgY.l00d0sYcFP2UW9wc-1739148155-1.2.1.1-oi2YFgDj1x2qQVUi6jHEDQxXBWCy4PNRdSSt76lr_9QVjThLW6hqHEF5UgBphJpX',cUPMDTk: "\/post\/9782504361?__cf_chl_tk=vHawOq3w8vIfskIixQk.7ZD2uHNoi88UQ7K2gnFEsR0-1739148155-1.0.1.1-qYO0HrdWAdqNdyqk7lZDd15Pk0v7jPj2FX7F5f78B1M",cFPWv: 'g',cITimeS: '1739148155',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9782504361?__cf_chl_f_tk=vHawOq3w8vIfskIixQk.7ZD2uHNoi88UQ7K2gnFEsR0-1739148155-1.0.1.1-qYO0HrdWAdqNdyqk7lZDd15Pk0v7jPj2FX7F5f78B1M",md: "iWYFgxfmR.dJtvZTt45cSZvwUwRsdAnlbxFO9Z6J2OQ-1739148155-1.2.1.1-KdDenp_haX_Z.DPQwa3C0ZQiS9FsksB8ShvLZAejkGamSdstIOz0Fuvg3on2LaXhQGitdoyJ0zbCO77KwEvGTFVTGjXgcpt6uQ21PKejx5h.eOrHIlLhVVpF3FiO1AYILBzcRfpFmsJityL9OI1e2OT20xpAmUqZ.RqRC6vCBXFGd53w9ZIaLnKnWT16LiFQJ86emkZKYUvsb_2jc8RfQ0fYzRWptoEn5m50K37pgRBa.h0JwFQVYE51YMYswj9QX1iuXWuh04IKL4ml7blV62FozKJ2VdHIJHKcHbIsJ0q6W3WFK_H48b4yi03.xPCBTSpfJPNK9o1weopn_kEqodHiLH7n7r5rH7jgv4RHJxaPM9egVHJ1o2Qu66E1CpNrF.eHebivQSW38TTNt0NozC7aq_DOG1GIjOOFsXyVj6sUkHumezATAbymEJ1f8NQbsO1zPFJjVpR0hGfeiS_5DDAMQ1GuFVa8DJJi7rLfu99hWd8lnLK9nZOb63RUb1j9U4ZSFQDfe08CXd.vj6o1Gvum_M9Yq2UCZPT6O3xV41BsxlbHL8hwbe5UBZRYPL8IgsQslo32ha8ZO0RwWnvdxNI1QIaPsgHsUHGAyxBStXLhgbrhoMNgkyTohnrOnsvEJIyK.kDIKaEG6hkKLGMTKZB5xe0DDV8oBb3G0GVYlNKTpeaBCyef0rc578AFwptj3xqNg5X_IDQrvHnOYv6057PE3INdRji6jNI3hdCDsP5uO9ntYQPpuZ9iIriOW7DC2ZewdhjjTe54Vix8y5hv5RwDW3MfQewbooTug0jqItbrlwGtnO76BmtwhLdNvlDb2JtWQYPE0JELYXnwlgxGmnEUZ17IKK7EwsYmCSuNQyj9K3_eih9KHOUGk6NuUHNLjpc9RkPCo.Q1thixpg_0MlDZ0m1NqXXO_feD8nDSlI8dwZKgwfHSiOFAZTsl6_grq4ps2ohiHcD3gyoDJ5A9qeaq6HZcDN2kTi8Lnb2fgCeD9FrUaPkCQwHGHD3Q03MDPIOh9vJdC5qXUsXN92Sq9yrEfqBev2ftGU.v8i4HVD2p98JnfA2K4vv25Db9CwSPCZzmuI83dATmP0fB8ugEpd_Plgw.03iEA44aUk.WcdqXoxiPa0BuOS.bi6TZo0M8ie6k6W91k6wPg3blYG_294aIwDhee2LWa5Tgzwjw34G8gTmioB7SeCN4mUFfAVUWq7z8e7LbdhRppDCGxBOHD5Jm_hS0m3LKDQIJU5cpk6JBzMI3ycf75TU.U2frMsrPx3PEwIMjimbOziS95UDX1JDo9cIDbnxZBIG6BeGaxEozcON.Y6AN8ZlB7xUUBDnjlUXD5IsM88iNx8dBNyMnfkXoYyc0A8eGNBXlSPLaaUrl_gHs74ZKqXeDXkct7tpDejophTwOU4xCYuHZFq..6GvqzQjlh5qvo9K6r1F.HROJUluCSH6QrXRRXH6IYQQnpH5zSLHqKtHzJBZ07B9vkVPcgw2to0a1sc4Rxr9vuYWOXSZKsHkEZ3tbV4OTNX8OOe9qeBw19Fzm6snGsKGzzng78MRA1s552PDH0kXCcqwva0ykxpaEOr80wkA.kI7nX8Zt0JdmaVOQgHVdgs6IbgGyUYEUkomqjZcV0KhhfRnemCH8EFXMl0M7dbfSV_7dJkx1KCdkBgb4XGhsoDknNj4iduhySaSvE.YtaCAtjq6tNTkbQPUvoZ2dGRFM4Eajh0YdbNQl1SnL.Dba7_oFdIKwKvSteJbKNAeGM33Wy171srW.XjJWHcR.3hdoYW.EjIpb0fAbCPDJko2vMNwV9EHhCpLj6SDiTzwAhwQNsuRfKnG9L3mNy5ScMwaC1MInX64.WBASi7eLAbl6UIcGHka1uSD_4UIqDIeV5Q5rSUlqCjIImsUgLCjrDBXF1ivrdLqax3avnztgFNX5GqRaKEEzUU6.agS3IpIQZu3gJ8SEesVPMPYyI35glUvxA1f.jWgoDdrI_LFgtBACXyuMAQOm73u7ErpdoiNzUBA1zGgoFy1mic_XvTFZ_CkJMK5.t3eAvtcfAwM7wIHw.f6DxTR1P2mWYHRwwDGugtPKjvuaCTNz9QFLgX9uOQzISHicBePL0J4WkQO4c9ccoy1b9i_3KP0jVKg.MMmT0l405dUqEgBRvpuudyvzEjO9Dd8Fzul7Xllokqmnv.Xqi7BP6QY0BWH49XX1_KfyP2CWcqykHDTe.YNLBRFUUSIMeIvY",mdrd: "vk77EQoer_C.zRpdQKRPmu1VLrOpUbkLaVuXcl1BzM0-1739148155-1.2.1.1-bUF6Bz_E.PbT8OzCLpZXlEeKxAQbDLvdqIzWr4Hl55KlmoWrgoejIjLV74IIZoBGnOHrsupwmnzZZz3MKIh1n5bVbaiOtuO0BlzNtjTSPlnD3Onxm2H96.q1WnI2zale4Aw1zWtpJQMgMpS6fZR4K.ObziqQVpNzc8F8bFjHTHo_1t_2o3Z6k.Cqzx3Uz.ya.cDdBtqpGQ8Ay3OBLWGTQ9sFy4az385FalvCuKjkae5cz71jANdPDjxbGt3V8dr1CyLe30Erc7KULF5AveekxIv7bfV5MSaUiEwzy5zHvVOHLzbiQjJF4pbiktsrWTp5F785tk0fXkcirip9Bpavr2gzRUvpamxm3yPaCUU8iJoSO5L6.XXVnXpCKajnrCci7Xd3WGvB_pbWDc2hOOjEIA351c2PyjNo8c.3LIFaY8XShAqq2AgV5kECmtZz7mCE4JRJv4OBqt2B.4X3ufAPm.acbsacGVx2gYl_mkUOc5H0_NCdmTUn7YNH_x81kqkJUubASduZoDFprt5OrmWkkpiINs8J.wdlSlhlSp9kJO.ui.86mcUDFDv0EQmtPS7QcV9WH3d9uFpgR83k__pRIkLsiHvdPigs1BMCgzHLMNiaTHbKI4ETVW7VBQb8_A_uwIpzKBHLTy2aNqPXBFQndku2.f0gcH0pQNrfiU.CxkOifF76HXD3cFKvsoQMTvGtqst1GYFkBkSBXg17VWiifVySTIJhLdY9hSfmHN_VDquKXjAIQ7e_IgC3G7wj8g.2HNTxhD9NBplSKV216bJUjZ6sJPniEj2ldGcBKRB2LoJvqPjyMx8Rt7lYZSVyl6y25U.Za.asCfTUgR_JDeLCCKnXHrY_qnJMUt.BrwGilA3PUD_XkbQyk98ntX6ezF1bJvEIHkCMyU9cQ_XjbtqPQK6kzeKAnpAlLg8wjdjdPMQn8YEZ1cejouhXeSF5UFqKlxwY3Gbh62kGJzPPYRqqVTFPPgoLDGrc5NSazjMFDFxuCzQG4l03yortK5bLdnLAwVdgXyrUYCAe1W_65z9Zw8XCWfYwdlxLS0ftgfhqas3HvTKpnxJ_8ctgQ0u3pLxd0N3LS_2kA6xPpY_PucGoFH8_WD3D0.5mzh4VapBJ4bDI_g_ZV7fyfh6iJje7GlXWIpD_hysWZTGyc8jHEC57NpIV39.yzhkwH7sAoBW_Y_KpvWvpSLMJW.us9AjuuLDR1dFKibfG0GuJX5PAWEVrHDHjXyvoryY5mOomgXIoWQLNzBmNv1.J.lmQ7IzfGItvRuDYm2DvYLV5UvlyxJU_yJ8TaTwE7Y2d8bSjQWNCx3OSVaoNbOTKMPSxzLvXr5__9mk1xLey4F8UJbip7AInCYNN0K4WrNYAGlHpR.ML6jhCDT.4fGvp1FKsUzemYJEDP0nxiJ8ojkpN6nUs7feIPlb9gJHVFyLyGU_hXnXoCdHQbJ_QtgArlzTYr9LrdHk2pmxfC3MkSiQnA8ZV0JyiAoSdFuWBBcXb0nHCg.lS01H.40p6222EqlDl79KXbj44g.1DICqFdSHJkwPfeQKpPOpNVFhkCLXOs84ijNIZw6ALAMjGidmN9wQkxLTUClszfOvexdsb6MHSbI8IW1EeoZaSoej8q26.XRn_2ZfPHjJXU13bHy35XHa4I0nQeCyxLCVydtJv1.X_Mq0dn1GkqF6NRug4ahVMgLJrg35PXCY1U7p9LVQ6rAK55kwVhcI9bo8VwtVp3Jtp9HMTNW5IFpQPKfIYUZAKqlMgeTX_GO_N9M9yUlaqKUqjkOiK6.9Eq6pmPDt7zCVHE_JJxF4mcNdIVfFGEedee42LPwMkpn0"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f80f62693c07ed';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\/9782504361?__cf_chl_rt_tk=vHawOq3w8vIfskIixQk.7ZD2uHNoi88UQ7K2gnFEsR0-1739148155-1.0.1.1-qYO0HrdWAdqNdyqk7lZDd15Pk0v7jPj2FX7F5f78B1M" + 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
