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-632285240471.mit-edu.top",cType: 'managed',cRay: '90f8347638455955',cH: 'ciG6Y614F1TLfhsNbX0HbmE47NdUUX4ENvx1Pk4nPUc-1739149673-1.2.1.1-yxzW89QNOuy53QBEN9.K2NFyiaV4HG0RLkcQb0.xsles0rUcW5fd2ENn.51IgVIH',cUPMDTk: "\/post\/9783014256?__cf_chl_tk=t_MstV6tvY_Z5_zVIJoV5r8tJ1XMBU5Zyq2wD00dEQs-1739149673-1.0.1.1-ULEwF4J5jfl1.7wxxg.15_pmsmZwJ_r_UxRP6S_rCqo",cFPWv: 'g',cITimeS: '1739149673',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/9783014256?__cf_chl_f_tk=t_MstV6tvY_Z5_zVIJoV5r8tJ1XMBU5Zyq2wD00dEQs-1739149673-1.0.1.1-ULEwF4J5jfl1.7wxxg.15_pmsmZwJ_r_UxRP6S_rCqo",md: "mZ_qrxvezopxbh7a_Xf6NH8W6N.pA160HF1r9CTMSE0-1739149673-1.2.1.1-X3wS1vKVKDw5cSikWZBFweholRaXhgMQjvrbw96reuDksbf6o5FhgDypp96waCPQjFUBjLczdWdGS.Sgwv.3dtoss6ZMpiWQ3S..4gRmnqzr4j3cVITfMYJVpa6HWc8kyqVQtDZQSzW2vhy0obxH8vFXCJ.7u8FwB_G5HfLTumvv2YFqc6Vtr1lazqvyWaP29F5XnazVLTFoPdMr6Fzr146tu2ABwsOXVtRVVdePsCE5WN52UQkpgT_4diWtzPSTtbWYiYcNXyssN1YOAcVsXDwHpDvNSJlA9ulGoD4t3y9R9xKAJ4xb5n4nCLctrN.GANYkIzdXwHuUhGR8xASza5dSkUwfjVOdwg5yfiteuU8qQkcNkZK.JsykqkRLkHrdBm9dOuTiWL9g.jGayFYj2lgicaitwcY.cfPSwC_5_GJH9MV.XYDjMF_ygFABwFDVY3BEwoVxWFQSXl3WZG9phwaP9TSOoPAmYEeBanLw0EweNLPTRWOFGpntSOyr.duEV7MWHqhLM8DGZGzOWmFExPTEVXLPUgTqy6ZgZ6HG6rW3j9ZSFszDY_QFzQVzugd_nbxKge3IM8ZolANnbgR6Xcvf1ciRaVjFxkEQIMvNFBVCpg_fkJlp_bZqDBmxj1e7ljzpUv36BOLP_wdR05kg8H0YPqfIaclZ4eNHnts6j.6z4xGHXy85pqrABqC8rD6Zfoc_JKxyo6iToAwsggkRhsInfffCNTPjgXdgzTLoPdO0b4ggtksUe_Bil_k0kNohcAOgYDsfiv2XoSh2raFwf9ay18dhywikcf.xqpMyVO8YhD0d8EceQT4K0lAnTUpYpekGHP8Tt_VOHn41jwSwrBkdeHIVEfz206Iq3j2i1IzgCzAy.dspllOH6gSm_7rbhS0qqXISjAY6vXIuhzPR4WIPqrzu1ghV6a00T8vvgfo7VHV16njvgxw6BXlObg_O_4dOFEOf9MzWBn4rmAQ1.JXP4nyRzhpOzxyS1N5X.tZsHhQc27gxGxsYjg5.V197Ssmu3eJOx_N1FHtYfM8AArbeuh2716grq38L6G9gJjTTtNidBBB8XhoOAa_EydLB44NnYFHtE_6v9oPe1UsjVwcVW9UEfYNKVGYVrZlIYSFkSDmQFWrBGV8EOUrzs_6wnBraAzjNa6ivuUYA2R8Nk4JFAuG9ZMn.td67V75iNvv1c7wiDb38zeplBO9kBNfF8kZqoriuwGhh_bq.FWrO5V2IXEJYEvW4nRdeQ4.C2kYgV31Ue_MFqDgvD22JXTI14iQdE8KRGbnzpD5vJitbC_ycmt4OosBVtXKDrLBeeJilpU9BD.MtglDqVqMe1miUGAbZozXdr.t7DC0kR6WBJ6enbhI7IJi00glhjo.XCPP5sZjNCAkVIIxNYekQMqlIEGeDs9WpILm4AaO5wCjdWueCf3oid1Wv5fwrexBbymRD5l4ubgHBMFuiHvM8_C9J5vHphhViFW3jWQ7_H5AXyKI9Y9aF_wH4L_NBkqbV6QIuI5SJeiyL4KVRARQvceyESGEO_KtkkUfSFOrcmvUr4kC1n4m80tM9Sz7LzDcFl34Q7AKbqPquZ0JWySFSayQOOpGBboS9x1Vcq0ITCcNN5v8RNfKtyDdidrxZPC2Frpssmt8QMrkQ3bwtW5pjvM5bzzKtULVfFHFtkrwZkvF.CMOMx8FAsAh0.16Vq0mA5rJ5HrK65H5_39WbeOJ7cAiyb3rjDkcN37xwi62FLAveSdEnJR9ImzVUsZjHLPQBJiFBIwZB_4gjGajHSrNdYNaGU7yHtYpTcR3IaXsF1QzsfJMyEXU6uFGGE4sVFPAdDkBWypRVHlj8Hw9C1z.xc_QtmmDZD26p7ru5tkEaoiEjEC2rL5bzU2i25CdVAu88Qj46T_tVDfeC00mXaNJNOADEdUDIqndI5lyT0IZdU6oLZl8svDnieSI0WNkdEOrQ1.e_D6gx6zfCtWEymGRMgQOt7A9Yiy4N4e0Z_4SyOCFJI4SXX0SRVn6SoAM3jhFZ2UgdQTmQPozeO.9oJAmiKpAcgapgFgXbOxgVhORZ_.CZXsjUeAcPWB96baHCuCzcS20zj08sbWplNI7lZLiC96IhL5v8Kxg4Mlt8Q5vWLUWo0YW32ez5ru1HTQ3t1IKbepKW2L70OQCRgI_WXGLJiXYDbSP_l0qAIsb6mqG69Mr1btm1vNNi1JnwUPu8RCDm8Qa_Xjf8T8oSAvf8c1fYjhrG",mdrd: "jI43KFatcT6OhXKcHD7H4de79azQ1EpIi9LfYnn0I9E-1739149673-1.2.1.1-UAfQLeEeMKIehdufQZDr5rUu6RaTvFEzMCVqP3Lva4JB0okbEI6zZCmvCmPvzq9YTrJH6N1M_DEqPHnzo9it9QsxGUcIVan1FQwSZpWvJ7JHTkpfegtjMfvLVRQ.Vau9bvI85u0OazS19g4TlmFE6eluOqNiaE2jvDJRAhf1XKwFSvK73vrDgGrOWnKcSCRwSvpTZ3Fsv80ExEyCmW_d9X4JxHa8I5CnZXa7HMiXLDeKs2Pmoy8GPE0_RQpiMb22fn_4m32vLc5E5l54rLqi0Pl18_sMp1MZ0b1ji.amn6oztQI5hzCs4T5rFsVBFeRaZEvZLGBrj46zYE9oXw9HLjUEmYnOgwGNOcIYYxHQ7GmexJiSj6O5D.hMtbHHBzOZ7TNKXxOI.X6g84V0p.z.cZC.b.ngA5nQnQ80UI.WVBjE0BGTkkILtjKRvpn3lSy.0EKeRS7LbIoyRtv6f02SYUWaAnMbIYkngajz4gnT5GT6BW3ZOF2MBkld_VDcZxJ4UXeFL1tOt4zuGnEe3JZGS2KmQ62Guc1wBC03vdzMkBh4zknOJOdBbwvKLqL0Ei4HNCj3reSHmOlaqEOkuZ6Uq9m9vrlUYdTahkA0NYJl8INpXMUznZBLTiUagsGwPXSzqvVu3rkDFGkrHaeQc6NFpiYN9Dvl7Svvv0pnmo3cCiaHtKmSXlHqRuQGHNnY4HK5cf9yCVXgpmMiACAlRdb.2bWKgj_Oc4iJD2uW01DAr2SvFhULmlcj2f640zoL9CabsNRZwodGLjqdZNKJn0b2LTmGxGLqNtWHNePJZglj53lkFd1Zbljkixr9gWXAIgFR.g0Zd0SgyjgyQcMi2dJYXD26BUzOnk6UDW7lbMw_0.z2lQWgQDXNUlorDJoFdlEXgExe1DTxJyX3_sn9sZfrGBj5OsEhaCfmDaDRtu9cXdRG6KFxkfQtOM1IMdJ5fQtxm3D0rYWhOkCgbjMKqamirxOOCCs2W6_tMDzNBFfoX01bgsgfB3PLZBdMHp0MksG3EAaAI6jFkiWNsLDX2dQ5rPhBaEWnGM08qTWpJ2tgMftYdON_xirpNFZoa.QhCLP8eLoSQsk0wL1Oz1A1H.1sCtByMIDMbjiYleGtJ77CmfQ9pu38w4vASada7kngDhS1y.dWjUEBlM5.h7LXuejXV.Q0me20RdBU3rpXXqpAx1a8tgvt6DOlsTZ_sjC2hGNu.3n1RJTrT9Neui.gE1RDmbI8wjCSpeRWFcGGrka7IE3UZ75a9p4h71AkLcRzgWXEEInjXZzFycThpiYgIGyBN8pkqKd0UcToRsb.d4Y.G02A3YXpc3JkgpxiXA0F0RcMNKGx4ydIJA8t49OKBeqvEh_UwhCcH.JdOlIXw2xD9__X_cOrnH_xPTT2oZok7xBY0L_GZ_C.tHxWoDkPhtdoLx39x6FResdTIkivglbRtZhySzd0tD082TfmzawypZLhwtNzYPUSNY78cRz6CDN26VyEu7x1WGoHC15PZbbk.lX59TziL41AGnKvFq8eyKjYKUUWZ1Mry_uoN5FMVkZqfVfpJRlCgCA3g.6ZOOopV.hb5me2sDqb.87P5sX4OP.X9wXvxKYEDE9gLIIObb8DVZCgANL4aLLOFF_t1G0uu5DWJN7kFl3yF7QbLkjtT9yPHgiHqFaVwH6vbT.YGNBxE_ll067EkeIu54ab1p9DEUI60XTz9glaRjBZ.K3vy8qnPT.60Ki3fW1_ePbmT3R3egmkI9KTwWb8bgzAj6ImjicfO9vTmZCRenfEPGcYtZM04IRmDFJwXeQ0oezDNJw.S8ltCHPSewIZMEoplK2q3Ok"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f8347638455955';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\/9783014256?__cf_chl_rt_tk=t_MstV6tvY_Z5_zVIJoV5r8tJ1XMBU5Zyq2wD00dEQs-1739149673-1.0.1.1-ULEwF4J5jfl1.7wxxg.15_pmsmZwJ_r_UxRP6S_rCqo" + 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