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-014911331517.mit-edu.top",cType: 'managed',cRay: '90f84049baa6c977',cH: '4icl1vjEiEP0ULSYKw3y5fB2oSzG.lFNWUHhAdpl3WQ-1739150158-1.2.1.1-JDOo8G7XbPpehLM_PSQqUBdVNbP.cT8ON15AxILtuHL90gjynZTu3xztSnc8dmk2',cUPMDTk: "\/post\/7468290513?__cf_chl_tk=WMSIYFczDIhHnF6XCuKc4hKOKDU28aiNkld.clHJ.u0-1739150158-1.0.1.1-OPbffSxJdN5YpQwo1TPxnZPwP5ROAXQ_7z5DlygGOjE",cFPWv: 'g',cITimeS: '1739150158',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7468290513?__cf_chl_f_tk=WMSIYFczDIhHnF6XCuKc4hKOKDU28aiNkld.clHJ.u0-1739150158-1.0.1.1-OPbffSxJdN5YpQwo1TPxnZPwP5ROAXQ_7z5DlygGOjE",md: "zladAIDzT3K9GAWXunxrxMESDdrMUML1.3in43L5eyY-1739150158-1.2.1.1-2SkGHq0UYOBpVOSd7ggZK8Q9hvdu2.4HvsRxWY0PjK0i_lXFoNY_TFi7CQ82zYMDDFq.onNBkWRi0xBRzCjJl5A.ahD_IzUChNcN2Im._0KCMUICs2Dh7ImdllBt1RnrhCmRHYIWljZp4ffrQtmKojcbnklrTRUeMTRoCbajaPdjgcjWC5VD6LOzQpNf8Tfewx7yEZDYrjMVUX9o_K9jeQ5vFfgfNNndIIm3PXLQf1qoyyb0MSHcZegDAG89LdRMm0152XqVHlVBpzn4110yPV6hWJKpmzXTj1ankFSGAXhLZaJG40GqYRbZeH7NTzav8lZElHc.gtTUIB3Yk4QxqjxgfoBSdx3Gu7vmt4IpTsx0pirlWYsUAdpy.o1gnCEa9ypeK5L5FA5hZtX1OapNywgRh9w4tISs5GSa7oiiH3gvH_hvKZSc7o_Gb4nNzAV6fZwSD8KAdAXssa834APyNo8BtJkb1EWbc4h.NH_B3T1s0NzduIVf3NImAP56a0MIqE6tmo2e5DXolnDGZAuN9liTdLJ2nE6ojZZh9FFyIjKYQiLi9dXa8SHHCcv9WmmHmfEP9PlhCG9xtvpOWjCj3Gy.oEMmFJ14.y0mlkl7wvOfzrjo0.Fnkgf2vyTfSM0skSBmqS_8FD8J6JQhJ_rjiVMq3WThpEkdxQr5bMN9ppB1OyTWAMlKkvASyw4zwBIz_JnQa2prWXLD.QDzHcaUFYSJZlYnFPqPMB91mLPP3ZIahFtwsQMAC94YOTP5thgA7v0wv8ZEzx8LumAE96OcYdU_1ZmLtPzVRfQpL.7.b1ZBMGlQLcvUXQFqEZWFT5r1x9FouLMU1wNZ135ksdGgW.lNSCZ0Ye_RPzfUa6RrKEzi_0QssELPKqKIuUKQ9ntRJ9MvuALwPzvRUOtZXvBSn114.ViiNC9BvTplxA_4Ojvj8rqSa6R1LOJFQSaWo1Ac5kHzB9UpxcXfBI3XLtLm5v6AvOo0SpXWb2TDpjga1R8jhERJeUI6BCpsb1LGYO70neokSp5ZvPvOGJM4c9zqWcFmR8uMLjkwLJP7acm0ogT8EqhCFQar8QMzpTfyKs9Q55aVD8GhN9MMMI3o5kM2L17v.hDWThoraWIdkEgDHCelg458Rrmibd4Ps2bnPAG.G8krgqshxDdhgBSjzYF_T.7UP9MOLPgfU2ZtkMydVQzG3X52gUd1nPxNqiT4QqijjBqHcIrvnF7E1OuEO0sR9Gujy7LdiI7U5SREsX_OTe0lwyge3n8jw9m1PsiiqaWHYzU7iBj2C40CW5iO44lZ9YsNt5LR42n1a9P0nw4Sbw7TG8mjItLdUMSh3Fv4k5ZrFy1KU.V.KXpwxtk.GMWnGNH.qWmlJcoufOInAGQUIJBOfVrdjtjVOCbVyrDfWGfNixukBanvggwVDLsQeIBNo94ZRpr9eaHtIBPplcgVPXgUccgswxtr9bwqualC_6pUB77G7SFMMmyKuQRQUPxKdnbYKwq6uMoD4LY6jemrtZnrvrgIQGV9VXXmd805SgLctClCeVVOdb4Qm6K.RHUjQAjtwOYIgmuIJbv5ByhpBTf4XAXDVxivMABxzMWmfrtsgEVdXi_OeCP0PpcgVrU4AaTMXHJiEuYyRn8GdxDBqP9hybdzG70WCVIlseYj7egYIJVDymuWsTgWnS6lRsf6wpYW3v_jQb4iHCB5UorVhzbL6rWT7hiMUpCkfQwABOI48vSuFS2HatwzW57dtrgj_I2W1KVse2hDYz92TwxXSYGAKMFbly.BW4o0bJkgmpWAnVorWVAdPJ0QDZIOYk10BpMuIRi2g3GU1EQGdtX_yDocTW0.DRVMbf1KmnzwLYUC7x9iiwJFTTLNSrD33JB1Xt4Ol0m9HkKzoOnn0PenD8DS_4Xwv32IoJBnTW7owdTreN22wTJsBGNeRyOPeiXyVzsvw9cJLsQ9WLPnpkroGlYKVjZqEL5NWAeYPs63M4Ay8SBnxsybNIklc.wlnUn2JjAPDPRWT4I0F.zvNIPrPZu_IpFCd538o_zlwaMXiIJiWDq7QSSwSqJVXdEjUIzt_Tv5p.BU_sWVz26R1UE2B96QF7FKU.0JWUZoKFkrL.hXwH7t0KiVBOxArx95iyBsO.m_gJCfF3_KcJWx.LDCtOEzKloSVv4mjTvsNPTU5odBuyCFePGTtlqpjvlBOfEvQHWsW30NNOmpWa1JyZNIdzXwba8cTTXXxch.m5uLCheN",mdrd: "QxPPMST5QcO2v1XMNTB7vSEw2eflbowDl6lRG8Hp8Kw-1739150158-1.2.1.1-QayWAVwXayxwhayszFW81lNUPn4KX1oR85YhUfolKceYkA84Cac2TyIzuE8DHWbhdaXTLKyuftB2x8hsawyG.X8Zho6eUc3JVdCXJ_4Y60b7oP1Pi8bsfVLpd0gfwRADMxsbHZiPh_4I8LdnSPt4j_re0GII4piRhcJgkn78D2FxqImKFKPNan3ABolsbU83RoeXz6PyLkoyEe.Ex_39Brtvo27u1aMRdTy_Har7b5DAY5mkLr_TSR1QSkG6G5qJxtm4_WnlAPEwKPZ7hgtLrAvwL1apANPi3WIEtKF3fWWVAjY_vRtsC_ItLMy1QqM5cgZVrBivWIltEbvBtV6cf8ZMvzjL5cieaKcEyv..qugUXsl_IDC7cf3OFEobMVMAMeIF0FEM04APwYnYqfcsFBntFM09JFOjWE4EkX2_fZslZdWnlXAuHvYbKzs9EvmM3ubz.9js36vm_gnV6fK19cthi6coMhoRXzYLS.o3tX1Y0tqCCis3C8PriUQdH_hoECNZdBZHs1NWEQep.Aw4aDLvPvbUGdV8.rVSBBZZRcv4FgyD9XqeD9mtya4QbPjNYGXJ6lWmNF8NZmxmpm.TzZeBUnIVS1QKRGrX1Vaf0Q8uxI7Ej0Q_9rsixnzEAw4GfEXEnlRtW9yZK8OwrnUutUzz5ajmEY6zYqYAsYzJmctd3guS0l3v2CctJYtEUPzEBxT6xLJGlJBUkq_VdAknlNn1RPnzO2n4ucV8XtWFsaiTEcUmWhyfe9oWEX7yODEu2A24VeF1oTfvo7mCj4hYiVER48AJ3O38FXGACWN.wgf_.B7FjvXfB.i_7qRx.3fUhcxGBnzyZNJRTsKprJgehpWW8s1hqPHDnXp9zcHdmse8_eMV.rADyoJQ0Ixe2Kx4vY1TOwVEq1hJ.mgd2f5uesqJl2M57soQEjPfFk0g9v1MkYJLb9T9Uhtq8.QE4tOfot9XqWEaNkDmZXoGc0V.Vc3DjrR5PPPR_gaz0I2C.f1eEUrCE2GNOD0VCCsPJRzWO2Jtpy7gKUOCHegkD5Hdks4kD6bcywGOz6y12N8BFL8VzoaGGkIsrmzJ7ASFYMm3DF8v4KksHVv93J8fv7lUggY.h4yPtAFHx7A2zu9EOt5qO6FDI7uLPCKqXnCyvKwDps4A1noU6YGVC.0pg0BpWt901uoeq6GzmmBG1C5402I5BMLvXMp3K.KJNktCwV79bF0LUzlc57S7NGQF48mSmOiqwelbAcOvT7jOclRWodSTs.dNrJuk3RRJh45.ruuNFl3Rdz9iIJjO72Wq9FuLJR9kYhrXbQlUSHkN.4EduqGIUfABCPmFWk93KJUiJAJi6Ru.b4TklLgSTL3d5bhOFmbTIxko3Biz5Z.6.m7xQaEzcDjcy8R_o9EefnBT35hSbiaFwuKGtfNWvv0hal1sJzvcqVEhv.KXv2YJ_XSmgFiqf_3gDcwaRHuDBmCLYseNXsqmEaZjxT7ngVBUsF81duKAI76uVS9YkIYwNEJxNjxGWGD70Nn3Hy5YtX_2yHTtKyAe997o_XogGmavrI4Zrj8W1hrGoDJg3nEQD80NcYTwrFvArPRIGJsmUGVBk5g3vpHeP7CRHw5lPhmZkiMuCxj684xIas24Or5vy1a25nrJGpfYjGqnDbu_xwnyIprj_8oMId6tdiXOOMS6lBwwlpJRMiU3Gy.du95_pyWpqfgXRoP1CxdpMMIuTuYNcv.UfpKaTieAcER988eAh3kZdRwSh0QYsikXfYMBHRrzJUAuRBbQX.eXnMQTQR6TdgvlnAiinzf6vI4P3v6ciPAP_xwX4g4rIMvpblU9zVKlwUA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f84049baa6c977';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\/7468290513?__cf_chl_rt_tk=WMSIYFczDIhHnF6XCuKc4hKOKDU28aiNkld.clHJ.u0-1739150158-1.0.1.1-OPbffSxJdN5YpQwo1TPxnZPwP5ROAXQ_7z5DlygGOjE" + 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
