Scientists have found 40 new genes in our brains that are associated with intelligence, according to a new study in Nature Genetics. The finding doesn't tip the scales in the decades-long debate about whether intelligence is a product of nature or nurture but it will help neuroscientists and others understand and define the biological components of IQ.

How they did it: Geneticists from the Netherlands analyzed intelligence test scores and existing genetic data from 80,000 individuals of European descent. They looked for genetic markers that were consistent across people who performed well on different tests to measure intelligence and found 40 new genes. Variations of the genes influenced IQ by a fraction of a point so they aren't determiners of intelligence but the findings could be used to assess the effectiveness of strategies to boost intellectual development in children.

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Updated 16 mins 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.

3 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.