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Zeray Alemseged / University of Chicago

A 3.3 million-year-old fossil of a two-and-a-half-year-old toddler found in Dikika, Ethiopia, reveals that the general structure of the modern human skeleton was already emerging millions of years ago, much earlier than previously thought, according to a new study published Tuesday in the Proceedings of the National Academy of Science.

The findings, by Carol Ward from the University of Missouri:

  • The fossil, which scientists have named Selam, was discovered in 2000 and belongs to the early human species Australopithecus afarensis.
  • Selam possessed "the most complete spinal column of any early fossil human relative" with 12 rib-bearing vertebrae, the same number humans have now and one fewer than most apes.
  • The study said Salem represents the only known fossil with 12 rib-bearing vertebrae in early humans prior to 60,000 years ago.
  • Researchers also found that Selam's joint transition from the rib cage to the lower back region followed the same distinctive pattern only seen in our early ancestors.

Go deeper

Schumer's m(aj)ority checklist

Senate Minority Leader Chuck Schumer. Photo: Tasos Katopodis/Getty Images

Capitalizing on the Georgia runoffs, achieving a 50-50 Senate and launching an impeachment trial are weighty to-dos for getting Joe Biden's administration up and running on Day One.

What to watch: A blend of ceremonies, hearings and legal timelines will come into play on Tuesday and Wednesday so Chuck Schumer can actually claim the Senate majority and propel the new president's agenda.

The dark new reality in Congress

National Guard troops keep watch at security fencing. Photo: Kent Nishimura/Los Angeles Times via Getty Images

This is how bad things are for elected officials and others working in a post-insurrection Congress:

  • Rep. Norma Torres (D-Calif.) said she had a panic attack while grocery shopping back home.
  • Rep. Jim McGovern (D-Mass.) said police may also have to be at his constituent meetings.
  • Rep. Adam Kinzinger (R-Ill.) told a podcaster he brought a gun to his office on Capitol Hill on Jan. 6 because he anticipated trouble with the proceedings that day.
Off the Rails

Episode 3: Descent into madness ... Trump: "Sometimes you need a little crazy"

Photo illustration: Sarah Grillo/Axios. Photos: Tom Williams/CQ-Roll Call, Chip Somodevilla/Getty Images

Beginning on election night 2020 and continuing through his final days in office, Donald Trump unraveled and dragged America with him, to the point that his followers sacked the U.S. Capitol with two weeks left in his term. This Axios series takes you inside the collapse of a president.

Episode 3: The conspiracy goes too far. Trump's outside lawyers plot to seize voting machines and spin theories about communists, spies and computer software.

President Trump was sitting in the Oval Office one day in late November when a call came in from lawyer Sidney Powell. "Ugh, Sidney," he told the staff in the room before he picked up. "She's getting a little crazy, isn't she? She's really gotta tone it down. No one believes this stuff. It's just too much."

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