May 13, 2017

Dentistry may have started 13,000 years ago

Julio Cortez / AP

Going to the dentist can be a pain, but it was certainly much tougher 13,000 years ago when dental work could have started, according to a recent study published in the American Journal of Physical Anthropology.

The dental details: Italian researchers recently analyzed a pair of 13,000-year-old incisors (think: your front four teeth and the four opposite on the bottom row) that were discovered 20 years ago. The images of the incisors show large, hollowed pits in the teeth that had previously been filled, which indicates some dental work had been done. Although the exact filling composition is hard to discern now, the researchers found traces of bitumen, vegetable fibers and hair.

Why it matters: This research, although not the oldest finding of dental work, is the oldest example of the use of fillings. It indicates that even prehistoric humans were curious and concerned about dental health and began curative practices for cavities.

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CDC: Coronavirus antibodies could give "short-term immunity," but more data is needed

CDC Director Robert Redfield briefs reporters on April 8. Photo: Mandel Ngan/AFP via Getty Images

Coronavirus antibody tests are still relatively unreliable, and scientists still aren't sure whether people who get the virus are immune to getting it again, the Centers for Disease Control and Prevention cautioned on Tuesday.

What they're saying: The agency explicitly warned against using antibody tests to determine whether someone should return to work or to group people within schools or prisons.

Trump accuses Twitter of interfering in 2020 election

President Trump speaks to the press as he departs the White House in Washington, D.C., on Thursday. Photo: Mandel Ngan/Getty Images

President Trump responded via tweets Tuesday evening to Twitter fact-checking him for the first time on his earlier unsubstantiated posts claiming mail-in ballots in November's election would be fraudulent.

What he's saying: "Twitter is now interfering in the 2020 Presidential Election.They are saying my statement on Mail-In Ballots, which will lead to massive corruption and fraud, is incorrect, based on fact-checking by Fake News CNN and the Amazon Washington Post," the president tweeted. "Twitter is completely stifling FREE SPEECH, and I, as President, will not allow it to happen!"

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 8:30 p.m. ET: 5,584,091 — Total deaths: 349,894 — Total recoveries — 2,284,242Map.
  2. U.S.: Total confirmed cases as of 8:30 p.m. ET: 1,680,301 — Total deaths: 98,875 — Total recoveries: 384,902 — Total tested: 14,907,041Map.
  3. Federal response: DOJ investigates meatpacking industry over soaring beef pricesMike Pence's press secretary returns to work.
  4. Congress: House Republicans to sue Nancy Pelosi in effort to block proxy voting.
  5. Business: How the new workplace could leave parents behind.
  6. Tech: Twitter fact-checks Trump's tweets about mail-in voting for first timeGoogle to open offices July 6 for 10% of workers.
  7. Public health: CDC releases guidance on when you can be around others after contracting the coronavirus.
  8. What should I do? When you can be around others after contracting the coronavirus — Traveling, asthma, dishes, disinfectants and being contagiousMasks, lending books and self-isolatingExercise, laundry, what counts as soap — Pets, moving and personal healthAnswers about the virus from Axios expertsWhat to know about social distancingHow to minimize your risk.
  9. Other resources: CDC on how to avoid the virus, what to do if you get it, the right mask to wear.

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Updated 44 mins ago - Politics & Policy