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: 'blog-affxisd61.mit-edu.top',cType: 'managed',cRay: '9814787e78aeee0d',cH: 'kZgv9Jwb5svVicHbzIrG_gluWpCdrZi_tzWBv5ysCGs-1758236543-1.2.1.1-QTn8OnQrjPrQxKlCax2EIdub7B00wmFXX12ogbjBVQliYAVszVHt_HDql.utsRrq',cUPMDTk:"\/post\/3192468075?__cf_chl_tk=2hrZhIGEFLE0T8204QA0SorpB23UUNONimzSzJqCrkI-1758236543-1.0.1.1-BHk3Ejt8YhOKjg22d14C0q7iCyx.eNrCkeGlSSk8Eq0",cFPWv: 'g',cITimeS: '1758236543',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/post\/3192468075?__cf_chl_f_tk=2hrZhIGEFLE0T8204QA0SorpB23UUNONimzSzJqCrkI-1758236543-1.0.1.1-BHk3Ejt8YhOKjg22d14C0q7iCyx.eNrCkeGlSSk8Eq0",md: 'DyDG8cDhyXjOSEBzQh6uA5XjAXQxvHv3Uf.XX7Tvzlo-1758236543-1.2.1.1-EzCMZVdYlE7deHDJysOoR7XSJEI9RVzWJYsSnwOzuuRmwPSlicLEwl2w5q7ZXAf0INNJLwjqjiIWKpVTXnximCBI.G5LM4x3E_bIS6lRYW2xlFWaFRR7U9XGKvxRWoHLu6Ygbki5JlfIh0oNNx2NU1IXp7M3e.fMgp5Orgrs1Qp14wq5griMmkIuT3ChLdEGzTYYKqh0nxgjioqNYRXTgkmyzbiMtPUN0WxIhZDs0G7IsFNzWRNKSzWSG4BXIrGyxVN94cLi5V8DfiL0y5akWJwYeRK9cx_6GAv5l1JkcMjwu02lWbaiv6UEB8geZYmH9DX_hpCa51fjTCrZfn2fvU9Zu4uIC_3MRNrKncAj2kyH4IZNHoLu5sGsk_bW214hcSxhTgYvLEw4NBCuweOQFV1DnWJvS7pAzSM3bII_ohxQTS5JoYIuEzLjHztj85hQAGZsM2ZvQpeHNoMl2Auy_uNS8ORj7mwepRFB4d9YLPlhnzMeugJMrMLQY67v_fWkoBTciu2Wa4O.foDnw9qPwcRCqSC70up3cNehZk5xHKTuCqhjbKWNlL_7X5pZrTE9xQrLFP8h7WH5_CE4Zacu0aifNn6Fji.Sw9FuQDEJF7eKXGH1u.1p3T24.gGnMbCazIMEYpip8zc6woE6cPSJLwl6.gfz13EM8SxtTxS.4Y8.AvJTNsYrMM4VfuoxISAooqUoJUQ.cJmcCgj2LzeWTLrzgJUujQ4Ztpb1YNTFV3pkMHPYMQd8YIIZ8XdVgVR8kCf.7gF6kFWtRGj2RuysQUmQZk_wFBoPgEF_fwk0udiC_1j2DHJKCt19QguBwdaMFwOzy5AtotMw3yVQERf3Ew',mdrd: 'NecpmuvsUMt1LsK17gPYrhIOdyeEaAeJH6gGmwueE0o-1758236543-1.2.1.1-CvuRjRDrg1trlF3_UoT_BoMMOFInQi0L.HO2nSaTVUqUJfwUVwMlSyInPkAQzzWzB4o6ho08YKit9aETpGFOUz507c117ETprCd3Elcxj05sy4q9.3hjGMPkh3H62QpiNSn4fN70rpt3f29tz6ymg8TIoETuZkiA6782ct_hfsuM9VV31Kzdt27cBrew.D60.rlrJiHy24IWU_CrkYLCVL3UXB_JpmE1126uPbjCIbTYGNsvNWpJVK_6epA0xcwjcp3W2cWzStEmy2QWgIi61z7Ogmt4kIJKHwePgSrpbw6amoKv1ruMiN0ZPSv7_fSBR8otVhtudJZv8entKBpi8BmL9H_LOnhtas3ICvonuz4YEubaepuXWYoPKFQWuTZGV8_6sfr6XoIzB1hUrYAzHtymYtpodxwgHtTxn7XLv.cGCQx3zXEEN5vFqAZAw1__k8lCuHb8nWA6LUZSZ0lrJEYQ.MWVC1lIMlhzCnHa1muOeBz4xO03anM1xf3RD7ERBumdNgUZPEwY4MvJCq4Pjq20q7.B5emqpigYlrTj6F8bz3_LYuMFfoJVtbdZRx29pnIUWMOSOXv_jBsur2i3V9ebAj2ROxEPeiYxHEiEi6wn67IrXfJP7z7UX6z39xqlWpjhzThDMVrOeBbQU6hNZFths_iqzqRSpAHXk4OLNIIO9HhalTnDiLUtyCfHU7p14F9kfqIwABNp6kBnkJLkgqM44gFM0ugv1JYMo7CG5SLRogxBmUWO.yc6778H9DjM9v.N1HwWrYz0oLkirpgWObH3QFs9LJ2yQ4txQcwdxVEMnYIo876QeC3GksyWbQQPljr6fdWfM0TBFFiPSlf.8UtgPy9xEYdSnH7QC8jF9aBup2TSoUwzVhxysGtwLoqq12uwxmHr6JsMn3bQJH708pF1xYYtPX7OmkQE4.v39c7nzBtylqjWWtq06K969cD9VspUqYKKM3E4Vf7AqsKBeOxtfgE7l7Fj1N1cBdUENGmp9zS8QFnb.el1J0kGZZq.XekjKtgNU5zI_Dq8m8Lp6ZoN4Enk2pDMVdRxaoaTi1ax0GayOA1ACiAIjPCbskVASjc9kD6pSfHWj5pcmWeaZvYIQ9wEnCZFDc8LT5vwKiobhuaXbYqLJxwN8t9oysAmLlnu1InD6TVpKo5opVerU8bOdN5SzQb6bs0S0VYdGv9xPevyXQIJy6BHXEMqOXMjWSkSgw4PyXHefPREdNB9kr6kVXTkkW1pCEiVEZPNwOGVuOfSRmG0rlOyHdmrTFlb5yUDLsA7C8MtctfEXokL1sITw5p0kTgfdRJXyMG5Jfmuh.O5RBW7x5zK2l_psSN9js24RQOpFD7iofsRXwtodZ9vZ5C6lzOT7PmotVPmC9uYecAN6nHAX7BCryoKsv0dI16sF.7kiH7SAAta8l.vsmlN4h9_0YtaYNKwlD6SoylZhwCMvVGiHGXZNo5wV5Mtrjaxy2GiByxEJ4vnxIQPnltlVkGkDP0sQc1MouHeh2RXi0CCdTabqU7pl9xZu33ru3f06ZJMqhUehx4DFfEgA5P8WkJrkoh2Ru_l6tWeHFqpgyH5o_Wb6IUkaqMosVfCmQRq8_4dDmJz.F2b56d4IRMZ0LRVgJk2jhEkzRix7IlYYY8rhi4D6w5VzZ18gSwFAoVHugWxxFi31xtgTrgjbTv4i.a_YtRTV8l12gx9AJPlAwswZO_70qigrUXU761fAh5r1TiOemTV2HYnsXwnEdNPEcBq5807YOchTbR1_gNn4kqje7C0z2twUqiez1o1uiTty8TT7y5ejpACX9BEjghCmhFzy7jUsvr3iYh3Yp2983O98hsK2HXqcJBRg6gRj6LVh07ce9qMkuF1zenXR5.SzPkzMgDKE5T8vZomgwlAGxKgpKgJHJW3FsRsUN5J',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9814787e78aeee0d';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\/3192468075?__cf_chl_rt_tk=2hrZhIGEFLE0T8204QA0SorpB23UUNONimzSzJqCrkI-1758236543-1.0.1.1-BHk3Ejt8YhOKjg22d14C0q7iCyx.eNrCkeGlSSk8Eq0"+ 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