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-827253591421.mit-edu.top",cType: 'managed',cRay: '9107a3070d882087',cH: 'G10kdvU4C0dS.7kCeyf2jdZtg1CiPwvYen49LJNREwI-1739311489-1.2.1.1-ilC2xsT1hRIw3prkrkVfIagkrD5e08OdDSr2fZmGrQN_yh5BqnVA7mLmHhptcG9m',cUPMDTk: "\/post\/9267450831?__cf_chl_tk=82J8ZXccnK5Zy_ejC7YtxdYZI7SxzajD36W.keCuWvs-1739311489-1.0.1.1-4jquvAh2HI6sy2iOk5LyxkfvanCcOF8QPVfrxu2wr0c",cFPWv: 'g',cITimeS: '1739311489',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9267450831?__cf_chl_f_tk=82J8ZXccnK5Zy_ejC7YtxdYZI7SxzajD36W.keCuWvs-1739311489-1.0.1.1-4jquvAh2HI6sy2iOk5LyxkfvanCcOF8QPVfrxu2wr0c",md: "5mVib2LXcIEIGvl3qIdTsVGJzWo3D27MsPlDIas3pjc-1739311489-1.2.1.1-rOLW3m_gGAAFG5jQrrsXwmIlJ5srKPAbRdo4hprVEA1cNjWi0GA6ik1ASQZteAhXMtOtRWHEMEfiezPWQjHL9JpNIxASyIlv8PIQVextN4GduduBRJ1k2.9iSi2l6e2qsed3Zzl9VIyxcwkkvxDOLtqy3UYQVXRp.zmG_pgrbmsCgcTmfXp.6jqVb0XIHvC_ewkN4NY32cQiFTia17z4uMVKIvw6pG5ipNBLTyDRY1dpzwXhTwy9OeOJXNRag9PMu2CGgKXo.IBr_50GnkYJUNhOe107Jd8wPAulfvOZ1jzZ7Tz73qJZlo_NucPJD9.CpsAyn_TxRJoeug5rohSCmCsgsmDwvJPzXUojvKZKDrI4FLjJNsw94t0s3Q7hJmnBmDs0bmRR4WE_sx_jGwlZMX69weWTfn0OLy0DKbMmP9E2J.KId7EqqCJCs.H5LT8yJRn1qkGUsMVbSEZvZvT6dNkyeLtB7OvQT73VwDttMyt2KEBbDkUJU0CnZZYgeuaRHFdBvKQAgJ0_NkbImJagfPa87ZD49rM6Gemm3pAJwQ9ofwiUxWDzxOhs0Id9rV_q3RbN8VyAy_ItjpoHOXQBx6M6jQuZDQ1Ie.CG8djP0gwYvZWAi3gfbsjy9T2fC5MbYBA7k6TDCO2aBm7iqxDxNcWO4I3vzZrPaHvfaGry5hTj95hugjAzK1LP8x95ET8.mEPZ5ygKznolr1YMQl6h178XtL47Z7RIwewOSY9K36_hpuVhgt.m4IPdp22BrgcVWOE49olt6fHuXYLFOmDhejEXWIyqLptTFCoARF9j41CTcMvDVsGU1aoP4y6_wMe38RWPVXLpuvWyqKG49ihAA4y5qvKx2jfc83D29_.6kvBg0DciqVhM.CQSv_p__qL6zdz8cAWLHqPhl6jq4DlmwT.M92S2Do4ngRzwP9TfCA98LPhOlyBJ0NntlnGO4CBAUOWBJ9rLIRxJqOnlv_Kb0QafEpNJ_Bv9.UpLi2sYFPbWhNuHiwIfN6VGbiLZekUQpJVdpejWi7r6EvJ9dW_P5RRvo7xgcFqfJaa.swNoyYaN4meU3Xu8TwmIckYbtGhu5U44pSN5Oxd8RQgFn8Za_yZ8LRyVkTxHJfqZ46ya_R51N3Cjrj7cq9PcDIZ6cqJPXX7RH0n78IneQK5fci3C6V9ulguESoblmVjXSmlnU40Qf9mtkhFKduRolLt4flj1WGReCsFmUInrfy6UQ.PRZL_t_TvqfVjW03bFXsRwWSlnQZlkjNav_uat3TRZd5sgXDEqlCiHcLbj58Mc.WYOUshZSJa0FI_2zSPkwSArFBbjsFMveXAIdXitpkmpUMNInHXBFxsd_qWGrvXic012mJwWwzyM3zkHGgw1ktI8wlNWqzEdA_zmUSKjJj3U4pUMy8YU1GzMeOuiTdgEY4YKAjBxW95CQZdqvbIjDBJU965QLRvKYZKEAohp9Z9ZKBTYDeSwie64Ray08Krswbrt.NRxdTOuuUGofjRQQWp.72D0sv9mG8Md5Iq8Cd06Mx_PP0Hzk6hKCYZgfHwj_1pAk649.9J4KH.UGU6Kl._9Mh3eok6ldNhHVqqWq9vOomU4FwwA2Spx4iJZcNMgWyoR7z4pQqez3ggFhTf_Me9lFpLvQrYlAX2bh1ENTqLeisxFJdTqSxlfsZLFw9ziJukqsP9WDrAvSV7I6F5CZBr4mnBGFE6Bg_2MqTs7.tzw4aBhSXhdO.PRfy5c.XVZy4xPyYb0dqul1Ob45PWIPUfiRozhdUUq3AXufXVGDoswBw2miKNE2Ww8HOECBWj5l_7OP7bTUFKDKCpgDhSU2lIdJZb.Vx3oJYp8.ZGzQwrTQ4tMEnubA0Va0bVZpZEQ1qS8XYUI2vNNUhl0nXb.eQJZL.PugOyD08NHOXvqjs_xinGRlyXbT2akyNDR5B7FiltiM3TvyzcgRMuPFN9a72ScRmRNHp0mpCn7Hzd5jhRMPPjr.4OOErs.mFlQfJcGgCtK4MgrQGozw6yAM0Z4U2mlUUeVZrIuxiaqUdB1hD_0gb03eijBBHQ4V4_i6gwYURfQ37pMDVhuqoMjDFOgKIJpjmTnQXZJv5yABFdkkIDtux.U9Jn3ZtFvZpiGDEb7XjL..mu_P3jwcMyMW4WX_7VmONirc7mTVk44hXAWnl8HU9Ges0EEpKk9RfQYun1m3un9dxLbDLstfQh6L2xIvmb1KtMv1L.w_1_d..ixv3hADO0y",mdrd: "7x.8Ig8xq0DGtX8RQzVY0lBdeOeuYPOYhBEQF_tZoME-1739311489-1.2.1.1-68rQHovE8kj5puhT3tkAmqHYHOKaf5sGvq6gS31tlV2ijLYyKzS5I.gRMeII3Ew6lLVTqUKuUvUiLa1LtddUYxPXp57yENxv4dpj5Jozo9mHbV27fyLCm5t4faQCalMY95Q3CkLXaOtpHPXiaKE_QSLVOe8ZnUsuaE08agxe9g9_BqytZ44Jg.PVgu.zXJIl3lMQ0uaP8e2qZokUWA.ofpgaujVx_nXPf2XlvdLC7oYciPjRlwuO6_9ha4KOS00nqxSB_EGRivkWxLshoYmwBEt0boYWe7riakaSvpcAzG19GKVK__1xI0eHObvHbQs0TCBN5tXskega3hc57la_9fIvZ82w5hkErhWpbQhrnnIRe.nABss11Cd4qDo2807eeA0RS.JtKuLyAGm140eKC6R3TLWPEelqPzs8r68z_yXn7V2cg2HycD8iM9UXrL5ES.cnahIncpM4Fy_jGH8UW4ssuA34IRRx3IrJp25mor3S.fXdt1ArTy9nAVe.kuNZiit7cHHyBx82GxcLl4rlH1GwIU6_qXC_tZmvVJEtuJIA8mDUtrOARKJkNrt1jgJeCIHzFDjepT.8KYxGzQvyz6SdWHzdxIXm1JPRi3jhUffgaMgrgrmOgJI7zyUeEoUvlxm3imk0MBJ5w7I2Kzs4fXTYnH9N0CqZIkoO__DDewsrE61NNudKNu9HJWI6aChtqVTJBb7RPWOCArvJs4UgmISQHXc9Mn.s9CrGiSHq.MCHh2hlLyYCrfbKTyix.rolGcLemtQI.ASLrKm4Y_U6iORusNa9tp0V6O0Z_E4LAE4EH.dnwic8NShY0_mYL2Mzq80m_B_BTP4l83HchB5n2_CkQJem0R3D3SVppQJhI7830xYvZM4Fkbyc_1cHHMxF0ITb.9RIUDZxUABQfEYGPff0zvnLJPwyGIbdZN.5hykBsrgzncjVFFI9IBVELDjgcFxF.tG00CXnu5f05MGmicdQzzOJxvpwDXakMa6cfAS9xzXuPTQUMUkn2DkrUKzq4kjXan_aGJpHAeqxB.TTn9g8_.HBI8TlpV98qCrK.iuo60HhfFrRAFrmIAPHOaMjylXo2POoaLlp4IIBl8LTxTBm974QaxJkpaRwlhNKZundQYqWS_K.kRsoIszuIAi_YZeQwn6t1FpHESTAYz6yybK7PGaD8u7WHA0y7YNDbX8QgZSnDIYoHRhqEpfGYYHyIBzMs9v9RJsZUfenEh.DbZjOZ87HMf.hoQKZuXPLQ9S3uj28yVHVzwUNenqLIcUvknjDIW_mGtQflyzV22jKFxIpWdzkEaeDMPc2OkzHd9pzrZRsuCWt48tQMrx_JRDf821IZCuv1E4eUvhWthVmjkMH2P2Y.ZAy39_3XSe3hgg2jpYWnus0kzPXM_.8tpghUpGu1_drmcx6dXPIkkKLCiEqySPnyvY7GGKXKwT68rCs6TC8gzOgfRyNTm1.Abh9e8QO61pFs_0l1UTEOhyrEHgqPJXz_6OS0zYRFu2wQJMzQ03AFyCSpTeYBpygYdb.fRDTUxyY.Mi9lTScL.w8QMyLgH_zktrd4QvIury6_XUq3m.fZDb2ge9khP9PwZwD4XK5wN5WtnRRPfM_gKGTtdNlkbT8FsHsbRJZZaY.PtW0ynesKxh0xNAITDU2sVMxeP4KLnAAZNcv.2Fa_WoXUKEJ5hKhO0ID6CaAqeYp1q1s7mxdvhs3cPhSSECf5Pl3rWCxNG2nBMCETdkxCcrAqFGm8PegwSoRKCG3N2G1RhRK19qzQFbVb91.uwKhd6owju_1I0at70dNk9uhO8w2KagHPe6f6.qhwO8RBsDILSA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9107a3070d882087';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\/9267450831?__cf_chl_rt_tk=82J8ZXccnK5Zy_ejC7YtxdYZI7SxzajD36W.keCuWvs-1739311489-1.0.1.1-4jquvAh2HI6sy2iOk5LyxkfvanCcOF8QPVfrxu2wr0c" + 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