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-539259613826.mit-edu.top",cType: 'managed',cRay: '90f809922e7f2046',cH: 'HQpj5.dcWEtSSh6cWYRFhKMVV85CZC3yEXcGdF0eidM-1739147917-1.2.1.1-.e3zQxBlJ6.7QN.mPFwlVIuXO6jxYhf5KBq9byI6fOeEG1BwNrtzaANR6THy9Ipc',cUPMDTk: "\/post\/5189672043?__cf_chl_tk=LrxIT7Ks_aRF_SgKDcCoLwBEEMGxn_lZ.z9JMVEx42E-1739147917-1.0.1.1-BqF1lmTRyTO68WNuOKqi_Di6BDaC2Wx7knmfyxYjkTk",cFPWv: 'g',cITimeS: '1739147917',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/5189672043?__cf_chl_f_tk=LrxIT7Ks_aRF_SgKDcCoLwBEEMGxn_lZ.z9JMVEx42E-1739147917-1.0.1.1-BqF1lmTRyTO68WNuOKqi_Di6BDaC2Wx7knmfyxYjkTk",md: "crLH0uswnABymkXQO.4KhssBpWhBdSbwDwynmedpJT8-1739147917-1.2.1.1-gWSd7K2_JPcenijwX_Y3KCndJd3w_2BeMN0X5uVOkW9dwGkVUmeZkAlaaSjTrcO0UKx9BG91ZeWdFedg0h.cOvS_TCTgfxe0WNj0W7kiQfytyL71kzU2bBEyM2t9lL0lZJ5XShfcxpWn8_Q7bzUSdsjYFenbMhpEu_QBnXQIf8qEL1KwBcL7cbWhwMc3dc1yrcdvcGbcVFkOFQQWmCfj1qInZ6qMoZuinrNkOyXnMtdyodGnHZK6_6AUF2q.TL8JXzSrM0.B68DLxRGQKwUjd9qfJINu7WjBGEsPuP9mh9bid827aZXK4COlJs4D4WBsr8lpyEn2jh3TtQE48AR3B.a9OjEZyPBXNlYKohUSstkGgbjCA63ueGN_xetGzRs2LWjKoWvDbTXwPgQ52E4qkZ4PDhutDO8QD6nC4f2WvO7SvP0JnhmC21nlUIvxzmIvTYYRvYZy9Wh6n8k0q8quwXhWswSr2qsp8yyJcpM2Rgq.7sUr6yBzb4cnx8vSc5C1B3W19nDTdn9v0a5H22svk0fw.dJnoSoVPROLM8S8yw.jfpR2FFlZW5fqf9D9XKyMq_DOt12jhk30LBes_SpyLr3j5GQpv7FIE13slcFs.0y4zVxxAKhOYOmDNAVe4pfYrYSbzXBHYpFha7l7hlMvbJIOMJv_60Ikjw8_6erQhqy1M9ubihaNaHeZ6iJSXQ7y3MagXo_kGwuQTF1LQ4l7NlVMbApC80qdBZFDQU2jGWemWC4yxMh8x6C9MP2Nqaq.tLFTZApbaU7U7adNUPaYAmVqvHvZ4j7SlLM2Z_iPtky2wwnNjF_0RGUNXFiYigdGamsEhp5oMLMMGEU_RgkFgjPVdCUAwWn3uNiIPer8ol2FNfJwH3oBqD5P.eWjaQXiWUsGm9yEgjSsFHQjIIREDOuGmKFMHYnMnY1.i_TY_KEcI.EDeNBxMNjCxx.47p1.jVSjK_Fd7r826yE1vCbJhVvRRv21cBRObZm4XDs5g5hHiGFCG9lOYVZh3.SSkYEMRtgb7dhj9engFP3Kk9ScX.O0hjkf6d.Q9jabureT5sIUnndY.mV_8QA2hK0Ja9m22M7MepoqykbvppbTbMN.PuWqL7tre0vY1iaDWjjrd83EHW2hh9S010FTuXBmarkYPjDghFCRW6RAup987vWWL9j68xEOIR5PHmbAvUGdfY0C4TFK7iJ8aWM0yPrmgPbrx7PNQNHfvAIuQ0zsEWZhVUbk1jbcDIJdxIxc7Be68QGpsRnPFe1cjg.o8oojq6fwMo763nFUHq8a8tdWtDUZz0J0Eyj0vD9Ve0E95YmtCrQ2a9_Ayqi5b7XHip3swCDZyLXiG4pAxvvAh8carEbrpSekQYGg8zshinB2YFbF4rDvz7mztWwK10aRx8s2SMJohrbNIfnkY4O0BtlxS1KQkfdojT3bwpMtJ_.yjyx04hptzx_iAnXbOrE473i80NoABmbUqyij1SUOQ3IrOKo2ho0Dqe7MuRHbDQXfV9nWRc5qLMv4G6XSGHPHASR3Bd7dRSs_Eis2cs2pZQTFgWDym5M0Xy8ErX6ezi9c27z7um8803D5uS1LKl6ziONZHqQqV9b._wPoUO.RGAB8.22FmMAlogYdp4FEpLpSGfFI0PVBB7QjyHmI9.1LD7UbT_ujBvoTLCpee2NFfuV9wDlj60Ys8khCCrNoK6R9V_jmn_hm8_Zcf0SfAHY3_QTj.pzsrE2fAwpLSMptCasCsVIUN0g9Gs3ADwqhZoC.9RbbHW_epKYY6KFHvPsvjkmJrkKqdq9UYEBc7oPD5bDMJXlVqn.83_umAAxgf0WHZ3ff_d.GstugoJkoc17h83O87FagH0.Ms4CEz9ayFGdjd2cmkab2c3WEIAt0QJlQExpwQuVUZ7dSSXB.YEoGathv3YTGnXFPraLueNfuEFzER9a8nPSRroKY1xVpduMlZl5DuqKoQQZhPqVt6NsxADE0f61_Rb_qjpCpAP3bxj6jMRYRdgeJEAWDm5l1hA3RkYLH9xb5wSAyW6IMK0spy0TJBUVZrye90sMlt7Hw8Az665qxHnb7KTIi6BKDXkygguEK9NaZqZ4KGrqsmKeIGYmg5r.oYEGf8XuvUg0_A0g4A0yv84a_dT96zDzQynfWEIRtpzOP3ZQlNYSLSLyXEE5w31GhC_1gnH5m8azjg3I2hkKg_hD6pXAWy0FHMSg1pWoZJnQ3_VB8ThtQ_E7QmiBjMY4z",mdrd: "CXpLz4Aly3cwaYzc_3SLCAVYWuAHuf58DVEXEUep0Us-1739147917-1.2.1.1-9X8t2MJAD_y9xFx0_8PIG.i8elK.TRM0YejYGOtuAqQrUksyvdT9HJeVFXWylEcziw9NiNGHGYioBOTHBweF03GiJVH0CO8In0XtI0ZouigxAff5nLv3kXvFqLVY1.m0AVLdXgIm.jPAFajhkiAGPxGuNsnuVemdB_BHyeH80yc.C16uQMiY61adq8TNodgkE9lty53DyH3YqCb21xwIkjAamJZKT53nzfl37BIAVXw78QXziFD4koY_Aib.yWflowaIMuXGJTdIxZHCFvqGwih1xIWulrgAhLq2NtjBmUpGEMffEmEHVbaC.ozpjemI.tCvUeRZsRftFRd82Jjaoc37U92ekUxS4CQS4KlS9YTRqpnl2DpK2kLlgqaexaXyvZh5_4ojcBhU_DH7tPWvuqeHnSVEweyvoYpAaFkLIvnkA_khXFGTf0jT5ASM_mdLxpJTO_BicR.OvgDFxyysRJEQkCB6yFUQJQ6keiORuvhMmGG_sczBusqGEjYbZYG_zh60BPaJWA.2ODZfghGyjRY7Dcg0HBi772V3o2VaPDhgZG8JDvAvwoZ5Rao8qLOUyjVWqBzKSg_zObPafXqVtcqS05eYdusgn85nXp4KBRhSzDPZ3EofTQ8YTg1F5nJ7fw8vk00gtyl0CrutlvhAqtMYd_ega5rVbo8hRpNAiJcuX016Hjil46UFzAWSLavfdDCSODc97mEy26VXVvfoH_knoIFqP64nhWgBe5UjE43TGEMfR9lRSQElZ6uzpLs8Am1DRm5N0oGg6QIIZ_mAFiE4a9ED_3q2nCI9K3d4zlQ.cMBbkLVgyETPTtw2Vwqwm1TZJJH2fqBcq4s6OMWwNdGLJg69BqOt_2rfZhd1wwOfTcnYCb4gSUJ0moI7acl221nb5LKlBH2nMN1sM_LuZX_ly1GSkZfTyCK7p0YN.VguT2V_YVEhThgaQihEL2Zt39Ldlapden25pPuzp7dZsu0uQARxGy5_0z0TNUb0zeAELCM6qwXw8xIuLaXDva8ourmgXysVGupB8COOde1GqvU4gijsl15N3RG2jfBMl3OJWvhYnemw9RvsdT0Uh_5ZZGiMvvPalRyoBQ6jJ9UfPcjG07TXAJhWUViCjmHkfvEzJjiI8e0kwI4UjoQdRx1HzD4V9eY5G.Mn4KfsxYRnXMHrLi_Q9i7sbmdwAPJcLGqps2Nl4RKS.HVlld56o38SRBjPEO7adLq37xUDo_tPqYmvD.1VrSA9vcwuRcqeHzIuOOgmcJ5SClHQNdZMFD0NVplrIJ76QekxQI6CFrKuDYXsKMBWv9sZZFUWquIlnFh3lYpVu88PYgyh2kjY8HQ6jVQ5G42z0TBZWjQbPH1_O9hFjP3m_EiXRLkHMKwxiECNO9Kxh_EalzjYLa4OcxsPyApTg_9F0KxMVnWrInxsxHuPpdU5_yuJOonMK8NtHoaEBMMp2J7gjOBcZkegbQ2YYKkf5aZ_YdHQpAfb5ifiddFS3xh6B9GCNy_a7PfJDIFzT84qKkz8cuaecTuIDHnZqDio8ZrfXUUKg7AWrDlE1SU.ZXIJj7TVC86LXRrHEGb64OL9E0OGPO6_19nbhhZDHCdRvp0Ya1uyVFsMHqTvuT6TIFp7xcuDjcHTv4Z5HKxqTxJ7xF4ViJPpvjr3Rg3V_ibKBTkdIptC6clrpTE6.qVF_0ruwGHhiYF5FOsAtGG5YQI1gC3VLXiqQq9C_4dgUWP2txoFUeZOych2pLj9vzonAjRdctWiznelhDDjQPVjlVkw8coEZfr80rUqNnSuh1qkpbNmSRJTmzT5adbnVDxnbMfuIVkceltaG4K04t4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f809922e7f2046';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\/5189672043?__cf_chl_rt_tk=LrxIT7Ks_aRF_SgKDcCoLwBEEMGxn_lZ.z9JMVEx42E-1739147917-1.0.1.1-BqF1lmTRyTO68WNuOKqi_Di6BDaC2Wx7knmfyxYjkTk" + 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
