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-363134548257.mit-edu.top",cType: 'managed',cRay: '94aeaa09e96dc9a7',cH: 'F.P.jWxbTpmvKQd8gB1DavHcfxwp4b9_g6iO4yOsE90-1749115961-1.2.1.1-_GJNrJIyfmT0vZHV1HgP0ThfOWaghZSRXtL8p9uWxnrJeVUbh8D0Uii78U5VZNUi',cUPMDTk: "\/post\/9781463205?__cf_chl_tk=Pno.X3iHaIuLXrIsGe4D1fB.FJGHKl9NqY6eA2.wi60-1749115961-1.0.1.1-PoynkBCgKg7GsdXp94cvmv1pySXxfTEihtRtB7BTgQA",cFPWv: 'b',cITimeS: '1749115961',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/post\/9781463205?__cf_chl_f_tk=Pno.X3iHaIuLXrIsGe4D1fB.FJGHKl9NqY6eA2.wi60-1749115961-1.0.1.1-PoynkBCgKg7GsdXp94cvmv1pySXxfTEihtRtB7BTgQA",md: "7QPQMBceWk.ONd1L90pFWXdtFDUV20I.iwIhAqnU43M-1749115961-1.2.1.1-HsVCKXW2DSDGILsHnCX5b9Qo1MTNdR5YNS2SpmJTcIoUJ0PFTgIxNWWkaGlbH.gUT8nW.YjFYe9a65JQA_zdYAUdrETgTWFSWqO_M5_0CIZFH6pkKxQR654SQAq5HFYkL9SH4PtgVyMEBnVbD1FYNp_79wN.3I9xwBT3GO8v.wqV7foxe6uiiGjLjCD82T3WUuKyIWN2mL8FC28KHfgSzY4dnQ6HKvZBtUPep9tWHB1yeHM8aFUoLcbyT1EPpesrCrhWgzSBuWiuWVHgIy34oQf9MKmy_q6gJucZOomT2Hhc_00IfZsKV7bG8YLbhxt53lRLbxs.6goxH3j6hhXxPyTEkiWNiZvbnSl2YigTx2NiobO0MgkJr02EHTDF_cBbmHFcmMbaSx3PMtrqtb785_c0uZLdCRGZKJEcoqLVjlsxTNmJbudvraP.EmtE0UGUn3LujPmEMve_fpxOZxFKkZTC4tihO.2eUtXcaFJ11Ly6ehhoqI6WtQkI1POI.j.NBpVBkpSNg5UBDV9gDju8LMwM4oo5JUto.suJOCct5BBkmUrAzXu6Cpy9MNucc9zJYDEtqA6YTyvlBHecFPahb2nkeZtGvKR.qy5xAAdWdV6i69AdnhEo6V4KDohe3g7W7hascP8YBuvrJtEle5CkxqDO9SZAlTx4Sif0e4jjKdeZKcbGbh3axpMEfcS1VuMRkfE1yxKOS1vw6w7JLltqocG6gqZhWqProZ2S6G0PCHKKu9fapbt7GeAtBxeIHS17AKtbQJceNEEC1lOm1PSdGAydmEajOGMZIlJ2yAJOIxi8b7tbNMmRsr6T3Kz3jCb77nSdIEJeDeNujyihNKKkKw",mdrd: "Pq4rciij6QLFsN5mQ3abdH__mNRry6xPb6xtsq4jmbU-1749115961-1.2.1.1-gwks4SsN9_a16QTiq1u9BwrTfhrOcGzuIUEaG5leNTlymPlbGDlEch62QmhLHQGhyttuQjD1rONLTs8i9XWjPnnDV1P4dSVf1XKvtEwrTfOfkGYHvSGInp8fhs.5n1J18vnLlbMrm_blvo78LTloxFGMTWPSFnWn1R9yAfRHv4o8NTJkkbZlbPrOslRfYIzvURO1cHOn7LcLRVWJzQ7P67iMRrn9rwQbY9HdQRc_JONiOLk6gQweL11oJE99gDprmFRNhOhI1As4QSyvWlp.v8DcuuCZED4a9TpONSJjmPK0XictPWxE6vPUwomBu_nREdAqIxs1vwUX5l8zq16rzISPc5PShfAwNQCGwBPeyPpW9Cbko4zp8hkB9L6yhES9U8n8vzgDI_DnRwNVrypqQ83qVJ2VhuAOiGHF9_MUb4qihVYDUR5fs93u1CcounR0._C5pzS65lCbSxyTAahrtarU9kohO0z4v4xGqfiVgvHPPZB7OpBiEaPjGdTSt6D_iZg1.dZQY8SSSpB8dFoF_9i6hdDEzqmtvBTZsVL8JLD6JAaS4JaSdaIZjHLzjHXwqlI8PDsPGJqqGji5kwSTcUIaIc8T6OOER1HJ8S5r4B1blKR7Ctc81P9L6Pr2cNN8oBd7PUs1vwf.BsHZM7XxxhQdjsQoGPjfPK2q7MN0dViO.kemoo5emxWHNpaXKuFwO8f5pNqw96muIcSdmtDPQ3fP1m0kjyzUWg9vfneS7OvjUUP5rpFGrCt.B.k_7asIv7iqnc2JwquoUudSVh0RdTIIyyytI44BRqgJGlYb73Eo7xbE7tJl5votkVgxLhwOsTPPA.QDeo9SaO27CH0F7C3blZs9I0YmUh5JyIQRej9cWNIR7dUwHoYOqw.8PD5frPS12BlY3jYGxcGx.52NAyqotgpSiDptICzJA30emB11YTbATV1PnRmuGVITHDv.k0uv8r5zSe7v70DS7s0Mpg01sKrEsy3EA9jbEA40xV5x3P1jKF4lY1TzR7xtB.4AMVLWtXiuMD1P4pEGL5nvwARk.Y6B0mZHqQker61AjE1FL.qa4ge1bvV3AT32TcuaVQaZm2bEzJnJDnjuNxRlE4cepJIs_5BKvvPY0aDLi6_Vjp9uJpnRb5n6NOfvKsiSg7UGalxtjDHMijgsfIqTcFjBbkecqEKLq0tJeX_QoPv6_uFfvKCFyNmdUbB9KzYI4CWGqltfO3H2YgMPuErR7Z6ugPKVO3T.xySBTa8vNOO5qv4bEff_kneYrs1HdiAF7WAyvjkj1n82xya3OeEKHECU_NIVymZwwm2I.SPjeYPcFjtrrzicVw9rVHhHXOhZAXHckioLiDiRlcbDv0vlZtliwSDRYief.lJXlpuMPckeeTdJqmboE3bBRDTKaNRrNm0K66TKEEBJv.FnbOr76kOLxbZNvOvfnhZb0KtcEn2xiz7Psx8Gk1_l5LYrA1LYCUCn1aS1hKbZV.WFV0E29xFUeiZt4VngzC2n048Q3Remi9Ls2MrVIxYr3s_FFDtcYTGFfxvPaLZH6.C6AJ8WeLkqVBmDycAJ5Kelwj1TJO238yqKnMY9.Q_4H4r2.shkw7wbT9WBZYhYnigSGFuT3DFrfb2mLQcSyW5NtRL1UKu7BtLHikHV_lhnn79hRBLp_n1BVVAIQ8p5aKRFa93ArObgKJ3cgrbtm4hiPD9Y_GZCGPy.8gbdI1z6Yk9_5p.OpmHiyGLCGcnzDylCLhLrKCg.kwICo4mxkdQ6RrgaFb7vhSHaDv1FME.Dj1HNs8QpYL1x8ip14l9.WsRFhm1nBuSZEFcuPLJK5CkphBrXa.ePGH90JSnfaVHPZ34OLWa9xjkFRw3CTKKX2EZxcHBDzaVYlbxljN1c5TGBCdlMytgRTf6BDNPdj0FO7k0g97BG"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=94aeaa09e96dc9a7';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\/9781463205?__cf_chl_rt_tk=Pno.X3iHaIuLXrIsGe4D1fB.FJGHKl9NqY6eA2.wi60-1749115961-1.0.1.1-PoynkBCgKg7GsdXp94cvmv1pySXxfTEihtRtB7BTgQA" + 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
