$40,047,425,768,420 in U.S. Debt, and an Experimental Vaccine for Skin Cancer

August 20, 2026

AI Summary

5 min read

The U.S. national debt crossed $40 trillion for the first time on Wednesday, a milestone that arrives with roughly half of that sum now consumed by interest payments alone. This episode of The Headlines also covers the Israeli military opening criminal investigations into two high-profile killings in Gaza, a significant step forward for an experimental mRNA-based skin cancer vaccine, and a British government experiment aimed at reducing the climate impact of airplane contrails.

The $40 Trillion Debt Milestone

The U.S. national debt has hit a record high, surpassing $40 trillion. The episode emphasizes that about half of this staggering figure is dedicated solely to interest payments to investors who hold American debt, creating a deepening financial hole that is expected to grow. This year alone, the U.S. is on track to borrow another $2 trillion. The host notes that the national debt has nearly doubled since George W. Bush took office, and despite promises from presidents of both parties to get it under control, administration after administration has failed to fundamentally turn things around.

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What you'll learn

1 (00:44) **U.S. National Debt Hits $40 Trillion** - The national debt has passed $40 trillion for the first time, with about half of that being interest payments.
2 (02:49) **Israel Opens Criminal Investigations into Gaza Deaths** - The Israeli military will investigate two high-profile cases of troops killing Palestinians during the war in Gaza.
3 (05:47) **Gaza Ceasefire Standstill and Kushner's Visit** - A year after a ceasefire took effect, over 1,000 people have been killed in Gaza since the truce, and Jared Kushner met with Hamas and the Israeli PM but things remain stalled.
4 (06:41) **Experimental mRNA Skin Cancer Vaccine Shows Promise** - Merck and Moderna announced a trial where their experimental vaccine allowed people with skin cancer to remain disease-free for a potentially extended period.
5 (08:23) **UK Experiment to Reduce Contrails' Climate Impact** - The British government is launching the largest-ever experiment to address contrails, which are responsible for over a third of aviation's global warming.
6 Standout Quotes
7 "Even in the rosy scenarios, we're speeding toward a cliff and refusing to turn the wheel." — Head of the Bipartisan Policy Center, on the national debt.

+ Full timestamped outline available in the app

Show Notes

Plus, could tweaking flight paths reduce global warming?

Here’s what we’re covering:

U.S. Debt Hits $40 Trillion as America’s Borrowing Binge Continues, by Alan Rappeport

Israel Opens Criminal Inquiries Into Killings of Hind Rajab, 5, and of Medics, by Isabel Kershner

A New mRNA Vaccine Could Prevent Skin Cancer From Returning, by Carolyn Y. Johnson

U.K. to Test Whether Tweaks to Trans-Atlantic Flight Paths Affect Global Warming, by Leo Sands

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