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Fueling manager Jarid Svraka looks on as he fuels an Alaska Airlines Boeing 737-800 jet. Photo: Elaine Thompson / AP

For the seventh year in a row, Alaska Airlines was the most fuel-efficient airline among U.S. carriers, according to a study from the International Council on Clean Transportation (ICCT).

Why it matters: Naya Olmer, the study's author, said Alaska Airlines "burns about 13% less fuel than the industry average, it's a profitable airline, and it's done this for seven years running...So, it's possible." The report also notes that aviation accounts for around 2.5% of global CO2 emissions, and U.S. carriers make up 30% of that.

  • But, but, but: As U.S. carriers saw a 10% spike in overall revenue passenger miles between 2014 and 2016, energy effienciy fell by the wayside and CO2 emissions jumped by 7%.
  • The other leaders in fuel-efficiency include Frontier and Spirit, which use "cleaner fleets, higher load factors, denser seating configuartions," and more.
  • Virgin America was the least fuel-efficient U.S. carrier in 2016; Jet Blue came second-to-last.

One more thing: Alaska Airlines bought Virgin American last year. Dan Rutherford, aviation director at the ICCT, told Axios that "a back-of-the-envelope suggests that Alaska would have lost its fuel efficiency advantage over Frontier, Spirit, and Southwest in 2016 if the merger had gone ahead then. But Alaska's future efficiency will depend on how it actually operates Virgin's leased A320s, and also for how long."

Go deeper

Trump to issue at least 100 pardons and commutations before leaving office

Photo: Mandel Ngan/AFP via Getty Images

President Trump plans to issue at least 100 pardons and commutations on his final full day in office Tuesday, sources familiar with the matter told Axios.

Why it matters: This is a continuation of the president's controversial December spree that saw full pardons granted to more than two dozen people — including former Trump campaign chair Paul Manafort, longtime associate Roger Stone and Charles Kushner, the father of Trump's senior adviser and son-in-law, Jared Kushner.

  • The pardons set to be issued before Trump exits the White House will be a mix of criminal justice ones and pardons for people connected to the president, the sources said.
  • CNN first reported this news.

Go deeper: Convicts turn to D.C. fixers for Trump pardons

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.