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;padding-left:1.5rem;max-width:60rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{line-height:2.25rem;font-size:1.5rem;font-weight:500}@media (width <= 720px){.h2{line-height:1.5rem;font-size:1.25rem}}#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: '755705.mit-edu.top',cType: 'managed',cRay: '96790261cc1407fa',cH: 'iTTT4oWdbuemOiUwZQ6YIYGoMGLbhKIICnqzHKhsvzw-1753922058-1.2.1.1-qphKkGx76Bapf1Bqg0ntuTtS0qIEOzYxywIYQxA2zjvDMoor5cyJVv2cF75YCdLI',cUPMDTk:"\/post\/1674583209?__cf_chl_tk=GdyhxoNKaNFEAWR.e3E1grIRhSl2_HhgBzkWqTuNQG4-1753922058-1.0.1.1-Q53LxHMei1wo1UtwBZ7LE._BgCYV2IYoAcy2vjNsPnc",cFPWv: 'b',cITimeS: '1753922058',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/post\/1674583209?__cf_chl_f_tk=GdyhxoNKaNFEAWR.e3E1grIRhSl2_HhgBzkWqTuNQG4-1753922058-1.0.1.1-Q53LxHMei1wo1UtwBZ7LE._BgCYV2IYoAcy2vjNsPnc",md: 'dXWDXCJokImmLVsFSjEWCBCINjuU2nC5spEM.AEzYOM-1753922058-1.2.1.1-5NKk.w71G3MZtmUlkzvwduXdgLpyCPhpU6O_QbRvTckNkXug_8E9l9aDz49jNDsEkSGNiRffJ35.NeIcMI1RZZ3FF30MzJgCQgaSS6a9cCp2ctaGC4B51C8PJzmlBsnotPbg6jxCCuB1aO1OuKONdK2Dli96XZkQgdS9EDDl85cUfbBA4MMqckvZ9iuKmZxFvX0Y3vvFyAdnd2w06JsVe.H.yhje.RtGalg04IX6WO1sm.hWXxH0O.vBCn.r9a_8530VRrCc405byXNHLKgoFQDmUHLXb5L6yl.XZjjLNVm4bE13IKMWv9zAEMZHP3NbSag9.mk73htQ9VrRVa1dNowhOrnC.XLZJ3P._3rSXA9CxGx6VB4v.MvOihWPhLqKx0fGF_bYDAv61boJP1Rqw9ABxE4acP25aCR3uaPzeMgPB57IHmndJULtp6KU3M_oYglqxgnZ_yoEa64Q7Zy8TD0BI7qu541QKC7bc8AKSDUPNYASbEONY3cp1H4jWxSPUdMW4aeiSL2hJCr6jzwtKz9G8c9pqGGGEbSIas5gJau4M18Ps8elbIqeQfayO4yXCix5gBa7WdWzvP8h0aAe5vhAQshAhd9FamnYcnjKGGuQP5N.AvmZ.DM2akE0oT8rKlHb9ttCxOPdZWZZb3CnjMoZ9_3kLcxe9jZGUJVJP1p4kkvqVLw.29PMRLhkv1zjntitbW6bQfDADVM.w430I8g9rstOpWaE6XXh71kGKekwgQDWINdI6AfKQZG8fmYzVzJudl26TI9FKC6GuKcgWAIjHTjlasgiGb3bLdf3cm4fmuZVNi4UwJl4wNZ4OUub',mdrd: 'URkG8aos.7j2A4F8ZdOqQtBEz6_6IbeanasELUyOPOI-1753922058-1.2.1.1-8MRw95TS7Ns9d5a8zYFnC8AZ4DrHGfYSXD3YIhG.LH97QdpplkL4BARtyz5KSRRqb8d4EwWluyWX2KwcKw7cHsedP6vtZQlcXVKkQ1QTv9zS5prL6HRGQ8dfDAtOVqmwYM4SLvLSswlfL0y6UUUe3eIKi_EMdIhIlH3p_ilL4GI8Pw3GrFdvUEnOOGdhREGZUWF8t5LSi_jyNsVLoyKiHXdVUZFH1f5L3CEk4sFHUAaAQtA3hp2O7mhdMXCWVVuufscNHZPSi8gZFOX8sd24FUYtYagme7OJqr6uOLV4LplgYOaLMb88SGiOMc4lNDlE09eI9DdfWj45pFxg7Sln4EhtZQlP1UAPtu6B5KTm_Oojwi72.cGeBbW82POi8PtpY5TlanG7Nf20HVz8RNjiq2da8Y3udd5VL5rwGxG_7ryezxDCCMlzuxfMIaGgVGwwdURtZfWlfy2tMfGABtQs5X8K2GCANV_HY2Plm04rNaZFPRTyn9T9zf9ptD6DHTqMAG7wCapAe6Th7dfb8.dJr8iAsiFfHgtAygmvtV5Uq3hjHdLHux3Dyma2_yvR3YEtuHRi3nsQCnlIUfqGEgfOsEyidoCWEtW4DQgYxDHlveH7LqKPSRr1cuX38SABPgTo6Bc0r6NRHV.ZcKJVJD0zfHk0pf_36dCASVC_DHTHEe32scCCwP1MlQ.kgnU8D3xdICja8cbUfmGS9ZvMXizxQD.RSE6wcjsurb3aNlEyjHbxBbFr34ITg0CPrzsuXai3.qpDRADszDkqsyeljpsdX1W3g0BFtTker8HALf5VBhrJfcVy2G378SnWZrqGR7Qf1y75.pVEXamtLEDJoomr.dcomU4ZyoEonDqGvbA6lNt3uXVQKz1mvPFLl8ASTbdC_ehnT1GH8R.VhWyfDRsfx4f0e0Ef_tnNxJ6wh6_2GZ1Tks50DvGulpowWDkIcwgE6GpUxyz8L8VD2sHDEc_ktY5mCXf7KO4VKT1aLAwntf7vdecYb81REH1LtsbiQ1c.tHUZymh4yVkzv7PfIsuYORs72ThAnZMEs1eftfLFmFW_mb_gGDHQ3leVZZEryGZ.zBAMmDE5ksCcRVUOy4GjNy46CLK0fFH6UklXC8uzNGD8cfby8lskcTbGYCJj5IZPH8zOmcPPqGI1kOYhqqPmpxigb6FcAdAQWIorKE5_aJWokbi_YIcaOGDBvTi5cmO3nRquJirQDmQAqZb88ePVfKXRjZYjvSpKUa2j4wHqi00itCvB8mzRBRCFEFBk7WYs8Y8FmvZyyAYpvemalID9zLZr01L9.HFbMQ_LUxHzr1zwzXBzuIp8WS1XBoOuDlfdJK5FRd40rZX9HWxfrA_qKsGhG52V5VktommlseuW_mY6KsNKe.cCUnC3G_yWGae7i6kkcCZlyiVIKclhK1fPTrCWepjzrUo0wA3KfvGnwiAkNgqqdbX95uOmpDZSsvzfIzAjOk10pjZAvwUo1eaKhh0jqgzEpwSVh21r7fCWcfKruhAyMpmJsDtswkA0159CX0UlDac7XJuidO._NZHRRG.73Owzla2GzE9HgESLyOiIfaVmqwCORv013qp3PRmeITIvoqnkolk3cjcpe1p7JHhpI0HCZpRjCPxqJOFokSBqilSvi71Db1zRUkpLgDBVbWYUvR8wb99CnXJY5cUn6kst8OrawUJyBINVtJ97SqJEXK1qGPKjeo_5LCBnjym.6JOuQp76HvZsvN0PYiORAgDCmXkjxixgV0U2UKccUDFwdxwkP5bDzpJmAhtNGADzcWSzB618ZJTImWabIR4rsbeGS3WRIvgcmTwVjBk8uq.nSQLMsH9y_capM7yzHRLQH2snpZOWkbuK_sxC6k07XHyo2xNTtblWBpFfgJYTLcY',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96790261cc1407fa';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\/1674583209?__cf_chl_rt_tk=GdyhxoNKaNFEAWR.e3E1grIRhSl2_HhgBzkWqTuNQG4-1753922058-1.0.1.1-Q53LxHMei1wo1UtwBZ7LE._BgCYV2IYoAcy2vjNsPnc"+ window._cf_chl_opt.cOgUHash);a.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(a);}());</script></body></html>
Home · About · News · Docs · Terms