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-404551629821.mit-edu.top",cType: 'managed',cRay: '91079b429d06393d',cH: 'pd1OuHltr4VeSSJnZXo408yw6uPj9w11NNexQ9Y8fe8-1739311170-1.2.1.1-_unzzf8VB6_FKPT4aMHbp95wm4RTswJHIAIk2yGiZVPoD9xb3r4GTLeQ_mFMwOn7',cUPMDTk: "\/post\/1308962457?__cf_chl_tk=CRyrhbvfZacsuLuOVOK3Xy1wt1AHyRNR8O_2y7wreJY-1739311170-1.0.1.1-jFYF.GpmZbe3z5paPWDwqRkefCWDnnNSCKNJMr1TyBA",cFPWv: 'g',cITimeS: '1739311170',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1308962457?__cf_chl_f_tk=CRyrhbvfZacsuLuOVOK3Xy1wt1AHyRNR8O_2y7wreJY-1739311170-1.0.1.1-jFYF.GpmZbe3z5paPWDwqRkefCWDnnNSCKNJMr1TyBA",md: "zoeikNvRZRj2BJ3K0g2iL_qWPSTbV3ZKHh6_Lpnqbx8-1739311170-1.2.1.1-Dqc.j6asQkArq.NUgHPqSDoiSa9vdO_TaHbAtKEpcVEkLItK1Huyq9FB9py_sSNOOC8SnfjLUdyj2KNnMWi1BB2DyeFonP9pYZtEbgzCQzsRVBKbhrNKsczqW8j_osloQcIZbnrqyt.fplyAm1rBqgOLjNfV5rMvihETUezG_Cs7tdpx6MLpZRShYX9AaV4V75q766e1MXirDIIxOD0G6RLbFArm8aH2aqZqLZ7lZqRt716LSqf8L_c9EvMSbgsfbLv9TJO_A3nqD3nLvSYrQbS7dOYht_FkZ5_fsO5GDR.TiWL2xMsqyILK4nMTiMX_7n11rIwNwNdf72aL5lyHAHFipFymWnGcUWFdAkOZmCug3GDDLmvHdnI.U3RRDiHb45XJap.OLRElAls29U5W7Pknc8_U0qXdp0VeXOBYd5kcN_9NRqsfxzhwjyLKo0W8KKxW_qiAC._.vhOiL4SbMxXlp6dWh3Xvp7nkn9.neyCQTH9Sf9YJQXhO8WalgWVeC_rmQiybya3ZcCFf0Lixf5b2YHpxWsESc5d0X1e0I36o7ZRwPpEHqJkCcDFlTGBQsfp1AVdDyb1DvJ2Cvdeiv47hWaOKEOwUpO7rhQQr8WnBOrPyL5ETSPt_qcw2B5KzJyRI_vfyAfY4VIhMSTxcPwfz1Di2HPmkhXV.qA_MZY.nWTjJra1JHOP.U7ChR.QPUFFxZXSR2VdvQUOTKKkPS7WhH1u3lbqbdIwX0j6Amruf8mPcIFI2MpOsXbl_EqjUkxAoiqLMq8CsmA.mBM92qNq522QG14JFR9ml21f9dVoQ_JOjtRyRzGkMX1.I440duAh9hEi95RkQNf.8CPZJ0MoemUcgZ_HpDOnTmZleKp0oUhmBxhLH_HrkmJg.g0OsXuR06MWIDMGCzcZJYszwCdH2ZL_n9en2YqTmb2_Smtf.0mk9HCSyAD5gCVeyzYOIVZRO_xetfq3xn.XnLV6ly59l0b44xfz6JG.9DcdvtYxh_.J61j0Fq6OzbGxTHDcfvnRrJA2gHA9kiiXwsd4wUCeGfSxo1cZ46iztt_TF4LJkYaXTtRsG5yPvASHP6gMQePCKOvkH9usf2a8wVNQqMy1RxvBOnVppFeiurbtdw35sZwFhazIsbt4ZsXa83smrlEClwtHxQF8llXUFWxzzFLxlI6mMVX51uGdjAJ5cIAqFGsH5ryQKWJHSpPVPG1p538yRgW8Q14d2YXC5wY2IbmPFFhSrnLPtm9mXVauwiAY2Wd5UGeCjWl3j_DMeiLku.9q5IYphF6ISIyKrhZFJcHWidjyYkRDTaWXuh3Fm79Spf2AVWcDEcySSMV1HQWXBTTTDm36CEKDreZq8jaPtxoVPX1._auPukT58AVHDLr1Ku7ylHItlUayIuOOOjX_bMFxzAn.wtWbeXYLkehYR74GdhWdU.svGOHR4kaZCx8lBnmSl7ZVOZ_aalD8pYqGD1Z7YLWO9Szfi8lKA1OcrYCcgEQSBkWrO7f9S9y3NJOoRS2snA_PHFIfEiyg7Zy8.RSx6xD7tqZ9DpKaxy.vroEXTH1qbHeK9ilCL2MxnfMD3oDbyzDMQIgQOckzq_urh2OzXE.ytxKgIpMp1AgDPTYS8IuaZsgJ3S7ifWGkwqzabvRGGunm_R49RwJHCPxgpfZKrBbToFOAyQoF37o4zWA4bIHWqcUjfTb87qs5CLalnrT6TJU_jhuvz_u3p5_xl2UdJ11P3l9FfbNeTvbxParIqcbyRsMy5aV2wGIl5XwYoi7WW8WqJbLym1EFS6_9FWIUE0Wjaa12YH5KqaPYb5yape6hri_CGrDftaU4nKcCIAh86YYPqCIB2uTXJQLrIPryjuzmGJNzDR1gmJgq7yNA9R4PRXNzaTU5yJDUHXF25.xES_MDmMiTcaqtJ17fSQNj1UBqx.EgGjHFup7iMY_sunbddguU1_qovnm.RqnjR_ok58nQk2PxgirR5xprOpAF513CF7T4Jup9fIivjav5VF.BvMvgUizGIVkHyPeIYlCpOzGCyCiSSucj7ltbBRUNKKOHy_b5AM6G1Uq7H0VzTO2E1sRcEUWInO4fxRiKjUPTEIyug49Z1l7JSKhnx5pz89VRz9sed1vm5wS2_tw8ZXqw7mWjAtANCCdzGGhjhUbbczHR42JVhftMOfI4NcDtwYKMM56c83Cts4bWuw5VFGXGp_ozTgFc8muSwBINkaS7pg7Je4ZluOZRegY.2",mdrd: "ulcdk2vTmMFlbRU_b4vinFzzgl9iMW.pnv0VXFXn0Us-1739311170-1.2.1.1-30INVaoae__RnV2wYmqec9bE6bfYWAxi3dPFge4_0cDoZgvl9mvE7KxeiaX9MUjaO4XfoYf7k_0MJWkypKgMJxXICQSNf9j8s2WNWgOOSz006bKSfJd._v0R_3HqLBYkxXoHMcgcPK1rv7RDzkYYUJ_SkONwuIMLlXA7sUjWWm_.6V6fTYVlE7KqyG2tZQFkfshcrLGkQhW0EJMhEXR5R2FNQWb1nScCbGqWNgMqaro3OBIxAjRncQQqbGFqyGZrFgduG_uT_PxabiZnjN3Yj1dr6J0eB.Yk0KswQOOvcEQ6EzR6.ncCTG99HAg8WuYVOh9KjOES0j7Sexl0cnoDw2lWu8bJwGPzj8YRt6x3XFWVfomGYyfuortlXP4Fo5yMWdru_swsfdcDYYoefaUv6ATLfVydQCy3nbuUZ2HnB5JgIf4y1HLVtKDlMWWsn2PdmCq9lVZv_XWE.rQUbtQlHYzDm7vH4mLz1IiMZjnHOqz9Bvex3_v.XYOuG6T9RT7UWJ7ZR1308LkOV2N5d2PFWEpxvskrSEzvu.aNDxiWVyr4gq4tmVA0edtPh5rjS_6xEofIpODcxfswINvNuj3G7TfXRcNubnDmqaWIxCOoXZ4hExO_CFib46RpJNsPjHmGpAvoPUIn34MG92C_2tWDNkcc4lk8uVnTobSIq4hF8Kg6rApkUyTEoYTX2Y8qj2ntgIaxen7qBY99G1s7q6R0s60LburfFahAA4zXp4WcCvMyADXn29F1J9_PGWoIBVcHcHQ0HicP6SY4CspJyjYp4EFGAQROtZhh8CaYrq0ifxhUCSIjyMNDwe5ROBKr97G3CDjUz6eV4VxXcIFE.DFp1DFpIRFuogTf0xtwwyWnIQWnfQSGosRKB8UXmHO3dxv4vWro91CX8Pvo4bTyx8iWA6dsCjLwO8pyalqimGTbMRx5KNHFxA_wqcwdLFNsZvgmVTtp.mX4.cMZEHgWvYz3FgPnYsExV.GC1LJ1XOuHi1BQgjejs.7ZHxvsrSz4SgZ.3J5LwvEW3TDhHR4_pvCXItnS9XrXcM18R2P5tkBiAWB6WLIKTBeU0DEe8O.T4eHv70p2_haHKJzrWCck7lP063TF0TcprAaKZQ2R2UDimL0cHBs6H7y2mdLIUraD.p_bpq4joDmspV5QVLREVpUfmNZUQJacg4ffRP_TbJLoyuNXyXWmun4T4v5n_X_8nwnkbr1ejNHgxrbnX6m6xZ5egn3UnTP5V9zlnFPXVn_g4YCBlXFNd6evdYEJClLUetkHrsqUCvuibDZi7k58JqT2GutKpcp3NHSVM.XYWidZJIg0M.flbZsqAJYwbIsBfyLCrVoWv.T0mtI4dpX0NEKKC4xnS9xe85cDuqZ1xEjl8PJvXZej5d0CTMeSOYmozvvPE8KgFC44jhsDHxu9dDC9vWxnfuX0_S_vhZNiIuNKL7l0jZUs72e4Ag56DtS6Ds9f5iMgvqF1C6WNSE0HmqKaDrpemT7EXYwD01d5U_rvBGsnNqqeIQaUB0RxLfhX3ibmRuKHttKvySZorbgzsjbwkp0kPFHvRyDJeHqBJwZTg61Athr2nBbAxEJ.3rot7V1OWIHmFDHYdVm9mwUj39UG.7L370qQJeRwtvuE8veQboNhQcU6KaF.LnhWUHYFGsjK2OoEDLpx6c6vVBhwR_3RADm5i0UNedaaT_j7O.YAdF5ws5T04_lcAoqmbO2GEBPx8NYnY5oR84qrK9zJD6rUMED8XVEVwyD5_Er3_8Z0jS2Plvi0P5Uw06WZrYCXx_D7Ci_I.QQopZWHw6uzf0g_H8FqH0pOjqvelabFSVlU7gW.tk8FYaZkjuRj.aN2Rolw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91079b429d06393d';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\/1308962457?__cf_chl_rt_tk=CRyrhbvfZacsuLuOVOK3Xy1wt1AHyRNR8O_2y7wreJY-1739311170-1.0.1.1-jFYF.GpmZbe3z5paPWDwqRkefCWDnnNSCKNJMr1TyBA" + 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