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: "807094.mit-edu.top",cType: 'managed',cRay: '90f6c2375d9b594a',cH: 'yeHImd.vDLi7_wKkMkuO24eWelfoMOezDM3th2QCbZc-1739134508-1.2.1.1-.B7EWueS1gIENPPSRNa1WP9kvV6Dvn9LlmbgHLzv34SEpKD4gKuoDWfyB64cl.2i',cUPMDTk: "\/post\/0129457386?__cf_chl_tk=uDA7zpY0Mw8NFcdUXIIJE7XOHNdUZ3DUQRDlghes97k-1739134508-1.0.1.1-cAxi_qGDVJB7ar92nMm45Vs9UcV5kIsLT0CT0pgKRxg",cFPWv: 'g',cITimeS: '1739134508',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0129457386?__cf_chl_f_tk=uDA7zpY0Mw8NFcdUXIIJE7XOHNdUZ3DUQRDlghes97k-1739134508-1.0.1.1-cAxi_qGDVJB7ar92nMm45Vs9UcV5kIsLT0CT0pgKRxg",md: "yUwBmKCmh3lu4GOHZSd2ofs.c6uaplftcm3xeAo39aA-1739134508-1.2.1.1-a3XdyUeorqnkNnXZ3UB5MZqkFuhFSISefZtPGdS5OoePYam1js0j6xy4_hdrMzPAUQtyioC_QQh2YqzqfKAAKqPSJ.PO4_ig63WoQ.BhBsSccXaMNGBm5Ir9ADfiTRJBBgytEOu7gj20h45HrSoiQ1DI0pB._7URHxKo41BgclQlMYRyTLTaCoX46_eqZswzYoOXmKylRurl2frO4uumKXb5.Yli4jvI4y9xyoIg9juHFxdHdIC6Swm0P1Duz5N_Vr1trFNeFplzzzMXGeAPOjjpd15krWMWYgV3TKKFEPwBnIBBgHAt1ta2STo9EIgWzXBKOpNtUtk1BXqB_9LXjttntqc86SgCdnFaeZF4rO7D4.ql4yujzuUXefLhDsOM98r8WNjHWS89TIjmz38zZtpGY3WAcM77SI8wRJ2Z7c5E9JDFLQyONkCVrSom9EfPGLBpg.akL9ET72FgExD4xKlD_4HHxzTfE9jSuwUvg4NZap2N.ywxyHQuHZm61H3a_cBdyjIQOGUYQfJ7q0jdL5sxVqWXu3rlmZc2h7CW5RL_AR7xNRNYJha1st7uyMNyE.t9wXH.8RiUbeAp8YlPUKw8e.g9AB6b3cDKEpH5V7gCbHb.95lmTDipT3WpD8kTvWnK5pztjuye6VphAYtKJi6uz609Z0oJYElryqn.iuNDIfhCIEzvZwpLEeZwypuU1wbPAzF5Pif1St7ePw52dXpwCvTOLrxTh_.b5xjhCxqbcSw.pODhOguwuVTMU_6kuoBXBPpXF_v5IYfdMV8_zuOsQGXAfDo3HWbySPgADy2LjQUfRoTyi.e.Wk5hTbKFnArCgVGKNA56vrLxhJMSMVU_zLyG8BF6taAGP4W.iVTXqI_RNUIi7t0G9ggFutn3qk3wuyhmKK90bhyxNJNH_gOEzW3Ou.mHXnfaTD4ZCi.HtFL19QBQTEg1fIego_EhZNNHDtIHKUf8JJCLh.k9X6_XiWHGip.dmgsdTCPk6Jd6UTmiCWuSevENpsWYtoWIEi9LcW0moi.1PnQO4mvwXHRZ5I2H4hL_mVFMDe_1888739MGMOp1y5UJQsnEu7mJcASvgz7bkLFjbwbN2akdJLkfE8dE15UaNQPBU1O8Kau6775lpChrNI6rs4tpTRqY62zwiRsRQ2kyQIyagPow_5EXMDm8xmPKSTg_kWtb1DeCGz64xJIsxUKC4MOaBDlYS0uEMq_vrlG672bMJP.10johdnfG3y.p6yrt59xOBVMabZyzYfTp5ZxlyIa10IHXQQUKz_sIqAIkqaKaXa4KqdmQPSxRxVZeMYog9iqir8r.R9Gb.tU3ANcQOc1fLuu39xC1I3ol_Mo9nlUMPbpms4sIDOakv.SshhJ9PumUle.RU6t6N2i0_F62yjjIxgF8_RvHF2MlK0Y4FaUjJa7geR7Je1COtDnRhqq8_lMimhHZ5Qs3i4G7t9yNyEVG9hRbDatBmK98UWFvjCU4KAZ_vzQt1_ZkONrHdrio1VfxxlShBJdwuBep6p.l.Cnn9w4sl5lxUHbiPssGXrcgnQzXmH4nJTy1qvh6AoEDnhN5ZpCiipHeSQ5RnYPtuHIu2DHNynd7Wvbm6EockCg3bjXGP2aWB_VIeY0OjJ0mbPHhVjVSDCVykqYq5RFBDPOK0it6H1p49RXwBRXjzFfP9gYQeWFyWOJ9.84CdiPaH9J6vgbXe9mHBpsuGW_AG1XOQwiLs1pVP9tAUpL3PH1ZVQs7UOHg2kZd2U5KDdfu8wJo60CQIeJmLv3pTOGH2Pjzu28D3OqcaRSvRuRZ2aSxyy0m1i8qmlsZdiAZzPgyR.h6aFWrxFdOR_e886mk7Yz00Eqdb5V2y_XlRNP.WRyJlzxJHmQvw7yl50Bj5dq9DLAWXF9yniXmDMARDbh4IeADNvOJSo7j5qeAOvXGg.fg8L_VOzchs74GbnN.k4UAPdeafCmTKb4qPIF70PUeiviWI49SeJaWoInFv30wAYCe8eGNzv9CdLde420d2y6EcCCyEZrlCL66cmMvRdKyli1yHOgJtaUbamWQGjOf8.4cocC8_saX9hPWbHD1ATfenS_vSoTb6p1FdbwTqPYrM6Gr5EgfAlB3mLSoWfjKllUZmJua5N3ZlljUTlK.IVLulnp3sIRGToEIfuygaaj1508om.tKOjuzLDAdYvgXfsIzk6Lpi4vMImU7nsoi8wRYCcauT38",mdrd: "8C7RDuzuYD9G1AxoCIbUJkaUpp0Vo3fHv_07EVxZLik-1739134508-1.2.1.1-HDOMpzEkeg3qCa6ajjGTw0SH0NXdOfUDDIllLN_UbBvrrdz80Zm9MbMCP1oleuPNUdx2lpMtK58bTdKpY7OKD95kUJFDv87po3OeGr6v5P_MfZ7U_Swz_sboS6HpkFnGQu_djzzhtYuxnO2KG1K1bcVLKgB8euv91ZJeyTOfODbdYZ45YWLPHw8Byrv2y3NpERXR1RtbevH9DzZwnkintxpTf0krGTYMWp1K27r.8UflfHcFXmJ_t1eTHGy7C_kGuL0dRhWnthqNo8hhMY29jre_cUNrQiAiIj2JmZPoecwWRS74ZWWLj_YV82EAK6kldGvQk3VRgT8wHES2by_VmuoV2cZ8aPR7pWp_.yNaElHlgRr82d4aoC7uYxxaVZyQzeZ5hJVdnZ.JD0Vk7UgrMXgwljfyIwpvzFR60pzYVSbcGgiLT4GpiZxzZy0qAjItgJPCmIuzvmANH0fXD8QCS4YAqIoXi_U94qPEmG7CwwNCyi2AGach5Kk7XcHsBiZVLYwCU4SjB71oHYxwkBkH1VKKnQyo.RH4OzW_lZDRg1wmgmbAIszJZRmQxC4qqbzm16f.eC1WajMXvAOtzFkksjYgD9VqX63PiKz2ekSvxR8bGA4w3PojK.aVpWnv88ocguAY1KlDk9yyYU_Q5r_h5VWWQK4M0tEwt9I9gzyBYlnyG7cJ9BlALmjhWUxj6BRxwrvXxfXwDRjUTtbZ3hvQq5D3E4dF9BcdG6pzslRgaMJ51E_8yk41.giUCmOYxpXj_nJ7yZHKVGGXD3f3Wk56IPHm8Jm5j82LX2c.SGCoPLby20FrSWIjFD9xFWxSMA.Dby.K.Xevkg0VG_FvtXSNqytEchQjQYftDwOEwCkMMAUG_L42NYJwQIwegR_TpTOjHFzwTQirQEkzz.pZTmm1h5gCfZ0u.vnUSy3MTs0uE6sBGFTdMLqq2ca8hkN2my6tzm86m7ZHVgTgvTvmrXWX7A0TR2yWLa2fQ9.zeBYfrgCMHxJLLjcc0u40AQNgXMP_9xX_wdUznD8eWpDtn13cCW6iSwRDwRRV51iTO8jCbTBi5ql1kOl0NV8lQdXVYislAnrEHs7weQvsP7W7u8HBmUsqhQL.MteOCsddm.eeKV0WSvLMnq9lH5YEddT1_xsDgjMrx6C6jCWW0yRTQaSBpG2z6SxcrU0HA2cXu.qh5pJaoP1ZkoL_R1sleuignNKUelGmr8qKa4GLTlX.iuOGN5Dvl4nQhz5OuJQyJZRmSHCxpCptduLoKToYvm8jznUa9jnd4bYju_ditTER0S_66wXgkn02nzWlyUWAKJs.IJ8RMMOf3QN226zFRzBe8T6XcEDwD07J19_OOBzzreLXPhqxsxBWp6Fy1RkNYGH53nXz8uClC75pId6F7zChu5eF3q2uUCoCpA2LWFjERwKzn7KMJrj6vENd1kw1ANvJQv6DYif8eW7QERWGFNTJYgItAOV_JvrELWSrBHf67rjanIpPtfobIWi2coF0wLdgmAaZZOf_NYVw0_SN9y6exgBD5QiJCHB47ds82ErPEBrP6H1V8eHQm5wHriuUCiQveF3lSDcRNykoSYQEKEmdXRUFpRGUrNbKUQRIL2u2sXKXVeIkTnUxv2Y6j1zuO8K5vSO.qfMzi1Rq5mTk1X634kO5_10bEPRZM_MMa60l96YN0z6KkJkEhqC6XdPxrlT78ZAOK_h9O4fh9qToE0flxzdNRmzKkLazyckmHiorQNdftzN7pBmjCy36tyOWqBbIzC71xGDkwQtTks0ctWCekxIp"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f6c2375d9b594a';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\/0129457386?__cf_chl_rt_tk=uDA7zpY0Mw8NFcdUXIIJE7XOHNdUZ3DUQRDlghes97k-1739134508-1.0.1.1-cAxi_qGDVJB7ar92nMm45Vs9UcV5kIsLT0CT0pgKRxg" + 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