Photo by Carlos Miller/Anadolu Agency/Getty Images

YouTube vlogger Ben Bennight contacted the FBI in September after a user named Nikolas Cruz commented, "I'm going to be a professional school shooter," on one of his videos, according to BuzzFeed News. The FBI interviewed Bennight the following day to ask if he knew anything about Cruz, and contacted him again Wednesday after the 19-year old allegedly killed at least 17 people at Marjory Stoneman Douglas High School in Parkland, Fla.

Why it matters: Details about Cruz's background and disturbing social media presence continue to emerge, painting a picture of a troubled teenager who struggled with mental health and disciplinary problems.

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1 hour 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.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Eniola Odetunde/Axios

  1. Global: Total confirmed cases as of 3 p.m. ET: 34,103,279 — Total deaths: 1,016,167 — Total recoveries: 23,694,869Map.
  2. U.S.: Total confirmed cases as of 3 p.m. ET: 7,255,546 — Total deaths: 207,374 — Total recoveries: 2,840,688 — Total tests: 103,939,667Map.
  3. Politics: House prepares to pass revised COVID relief bill as White House talks hit roadblock.
  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.
2 hours ago - Politics & Policy

Trump pushes back on changes to upcoming presidential debates

Photo: Jim Watson, Saul Loeb/AFP via Getty Images

President Trump suggested Thursday that he'll resist any moves that could cut off candidates' microphones in the next debate if he continues to talk over his opponent and the moderator.

  • "Why would I allow the Debate Commission to change the rules for the second and third Debates when I easily won last time?" he tweeted.

The big picture: White House and campaign officials insist Trump is still committed to two remaining debates, despite fallout from Tuesday including poor reviews and discussions of new guardrails.