Photos via Andreas Claesson

The Karolinska Institute in Sweden tested drones to rush defibrillators to simulated heart-attack patients and found they arrived in an average of 5 minutes and 21 seconds, versus 22 minutes for an ambulance to arrive in a six mile radius.

Why this matters: The survival rate for people who go into cardiac arrest outside of a hospital is low: 8-10% in the U.S. Reducing the time that elapses before defibrillation is a key factor for increasing survival, according to the American Heart Association.

The limitations: The 18 trial runs were only performed in good weather conditions, the authors note. And when a drone lands, there may not be someone trained in defibrillator administration but bystanders talking to paramedics over the phone or through a speaker on the drone could talk them through the process.

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Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Eniola Odetunde/Axios

  1. Global: Total confirmed cases as of 6:30 p.m. ET: 34,124,948 — Total deaths: 1,016,723 — Total recoveries: 23,703,113Map.
  2. U.S.: Total confirmed cases as of 6:30 p.m. ET: 7,273,244 — Total deaths: 207,605 — Total recoveries: 2,840,747 — Total tests: 103,946,170Map.
  3. Politics: House prepares to pass revised COVID relief bill as White House talks hit roadblock — Biden to expand voter outreach with in-person canvassing amid pandemic.
  4. Health: Health officials urge flu shots, warning of "twindemic" with COVID-19 — Coronavirus infections rise in 25 states.
  5. Business: Remdesivir is good business for Gilead — Amazon says over 19,800 employees contracted coronavirus — Doomsday has arrived for tens of thousands of workers.

Doomsday has arrived for tens of thousands of workers

Illustration: Sarah Grillo/Axios

Federal coronavirus aid for airlines expires on Thursday with no renewal in sight, meaning massive layoffs for the industry aren't far behind.

The big picture: Airline workers aren't alone on the unemployment line. Oil companies, tire manufacturers, book publishers and insurers are among those that have announced tens of thousands of layoffs. Federal aid through the CARES Act earlier this year delayed most layoffs — until now.

4 hours ago - Science

How the brain handles the unknown

Illustration: Sarah Grillo/Axios

Uncertainty can be hard for humans. It drives anxiety, an emotion neuroscientists are trying to understand and psychologists are trying to better treat.

Why it matters: Under the threat of a virus, job insecurity, election uncertainty, and a general pandemic life-in-limbo that is upending school, holidays and more, people are especially anxious.