The Covid news keeps coming, and I wanted to understand it better, especially as Omicron makes its way across the Atlantic, and as vaccine effectiveness declines. Who better to talk to than David Wallace-Wells, New York Magazine’s Covid specialist and environmental correspondent? He was on the Dishcast early this year, before the vaccines arrived, and he’s about as honest a broker on the pandemic as anyone. I also asked him to debrief Dishheads on the upshot of COP26, the recent Climate Change conference in Glasgow. I learned a lot — about the waste of solar panels and the potential of nuclear power to help us get past carbon more quickly.You can listen to the episode right away in the audio player embedded above, or right below it you can click “Listen in podcast app,” which will connect you to the Dishcast feed. For two clips my conversation with David — on his sobering assessment of the vaccines against Delta, and on Biden’s bumbling on Covid pills and testing — head over to our YouTube page. A reader looks back to last week’s episode:I just listened to your podcast with Christina Sommers and Danielle Crittenden, and was pretty struck by your conversation with David Frum regarding President Biden. I’m a strong Biden supporter and am quite sanguine on his chances in 2024 (yes, I believe he will run if his health permits), so you can imagine I was more partial to Frum’s argument. But I’m wondering about your diagnosis of the prospects of his presidency. Do you think his situation is irreversible?You can point to any number of two-term presidents in recent memory and find a moment in time where, if the election were held on a given day, the president would badly lose re-election. I wasn’t around for Reagan’s presidency, but didn’t things look pretty terrible for him in early 1983? A Harris poll taken in early January of ‘83 had Mondale trouncing Reagan. FiveThirtyEight has Reagan hitting the mid-30s around that time, quite a bit lower than where Biden is now. Before that, by mid-1982, he was where Biden is now, polling-wise.You could say the same of Bill Clinton’s first two years. It strikes me that few mention his inglorious dip into the mid-30s only a few months into his term, again per 538. Then there were Clinton’s low-40s averages heading into the 1994 elections, the collapse of one of his signature legislative pushes, and his infamous drubbing at the hands of Newt Gingrich. Was it considered likely at the time that he would skate to re-election just two years later?I feel like citing H.W. Bush’s soaring public approvals in his first three years and his incredible collapse in 1992 is a cliché at this point. And of course Obama had his highs and lows, and spent much of 2011 treading water roughly where Biden is now in terms of his poll numbers — to say nothing of his total collapse after his first debate with Romney and rapid climb back to the lead just in time to clinch re-election (yes, I was around for your reaction to that!).I guess my question is, knowing that ultimately successful presidents can recover from political lows and have, why do I get the sense that you think Biden’s condition is terminal?Because of his age and declining abilities. This is no reflection on him: he’s pretty remarkable for a 79 year old. But his speeches lack fire and focus; he’s background noise in our politics; he keeps making gaffes, including a rather dangerous one on declaring support for Ukraine; he has allowed himself to be defined, fairly or not, by the far left. Cognitive ability declines sharply around 60. In 2028, which would be Biden’s final year in office if re-elected, he’d be 86, my mother’s age. Yes, Trump would be 82. But Trump has the energy and passion of the mentally ill — and I just can’t see Biden matching that even now, let alone in nearly a decade’s time.Another reader sounds the alarm for Biden and his party when it comes to America’s schools:The NYT posted this today (“Schools Are Closing Classrooms on Fridays. Pare