June 30, 2015

This summer, starting on its Los Angeles to San Francisco route, United Airlines will fly commercial jets using a biofuel made out of plant oil and animal fat. In 2013, United agreed to buy 15 million gallons of the fuel, produced in California by AltAir Fuels, over three years, with the option to buy more. AltAir uses discarded farm waste like tallow (rendered animal fat) plus non-edible natural oils to make biofuel that works in existing jet engines.

The AltAir fuel will be blended with traditional jet fuel, starting with a 30/70 mix. But United isn't placing all its bets on AltAir. On Tuesday, The New York Times says, United will announce a $30 million investment in Fulcrum BioEnergy — a small amount compared with the $11.6 billion United spent on fuel last year, but the largest such investment by a U.S. carrier to date. Fulcrum turns municipal garbage into aviation fuel, promising cheap green fuel from a plentiful source of raw material.

Airlines are trying to reduce their carbon emissions but alternative, sustainable sources of jet fuel aren't yet available in dependable quantities. The industry hopes to cut its greenhouse gas emissions to half their 2005 levels by 2050. Peter Weber

8:45 p.m.

President Trump may "love" the idea of attending his Senate impeachment trial, but his lawyer Jay Sekulow thinks he needs to sit this one out.

While in Davos on Wednesday morning, Trump told reporters he thinks it would be great to watch the trial in person, sitting "right in the front row" so he can "stare into their corrupt faces." When asked about Trump's comments, Sekulow responded, "His counsel might recommend against that. That's not the way it works. Presidents don't do that."

Like the House managers, Trump's defense lawyers will have 24 hours over three days to argue their case. Sekulow said he doesn't yet know how much time they will use. "When you're in a proceeding like this, you have to be flexible, you have to be fluid," he added. "We're doing that." Catherine Garcia

8:02 p.m.

When Karen Harris turned 18, she learned her biological father's name, profession, and hometown, but it took a few decades — and the help of social media — to finally track him down.

Harris, 56, was adopted as an infant. Her parents were teenagers when she was born, and unmarried. While she is "grateful" to her adoptive family, Harris told The Scotsman she never felt a total "sense of belonging." Now that she's discovered her father, she's "found completion. I've found connection and completion and I'm cherishing it."

Harris lives in Cornwall, England, and as soon as she was an adult, she asked an adoption social worker for information on her biological parents. With the limited information, she was able to find her mother about 10 years later, but her dad's whereabouts remained a mystery. She kept searching, and recently, a man with her father's name, Trevor Sinden, appeared on her Facebook page as a person she might know.

She clicked on his profile, and the details pointed to this being her dad. She contacted him, and Sinden confirmed she was his daughter. They spoke daily for nearly two months, and last week, finally met. "I have looked on the internet but could never find her," Sinden said. "It's early days but I feel we already know each other quite well." Harris said she sees herself in Sinden, and feels "incredibly blessed to find him now." Catherine Garcia

6:39 p.m.

Eli Manning, the quarterback who led the New York Giants to two Super Bowl wins, is retiring after 16 seasons, the Giants said Wednesday.

Manning, 39, will make a formal announcement during a press conference on Friday. "For 16 seasons, Eli Manning defined what it is to be a New York Giant both on and off the field," John Mara, president and CEO of the Giants, said in a statement. "Eli is our only two-time Super Bowl MVP and one of the very best players in our franchise's history. He represented our franchise as a consummate professional with dignity and accountability. It meant something to Eli to be the Giants quarterback, and it meant even more to us."

Manning set several franchise records, including most touchdown passes (366), completed passes (4,895), and passing yards (57,023). Catherine Garcia

5:44 p.m.

While President Trump's desire to investigate former Vice President Joe Biden and his son Hunter Biden launched his impeachment investigation and eventual trial in the first place, Biden is officially distancing himself from the whole thing.

When asked Wednesday if he'd consider testifying in exchange for testimony from former National Security Adviser John Bolton, Biden said he wants "no part of that," per The Washington Post. It's "not an irrational question to ask," Biden conceded, but said "the reason I would not make the deal, the bottom line is, this is a constitutional issue. We're not going to turn it into a farce or political theater."

Democrats, namely the House's impeachment managers, have continually pushed for the Senate to allow Bolton to testify in Trump's trial. Bolton has said he would be willing to do so, and even some Republicans have indicated their interest in hearing from him. Other Republicans have insisted they'd like to hear from Hunter Biden as well, with some saying Biden and Bolton's testimonies should be conducted in pairs.

Biden's comments follow Senate Minority Leader Chuck Schumer's (D-N.Y.) assurance earlier in the day that a witness swap was "off the table," even regarding Hunter Biden. Kathryn Krawczyk

5:15 p.m.

It's true that the Latin words quid pro quo don't appear in the House's articles of impeachment against President Trump, but the White House's argument that they aren't in there because the allegations "didn't exist," is a bit of a stretch.

President Trump's personal lawyer Jay Sekulow made that case on Wednesday, claiming the articles don't contain any accusations of a quid pro quo. The White House subsequently promoted the comment via Twitter.

But the Trump administration is probably taking things a little too literally. When looking at the language in the article accusing Trump of abusing his power, the House pretty clearly summed up what amounts to an allegation of a quid pro quo — they just used other, English words to describe Trump's interactions with Ukrainian President Volodymyr Zelensky. Tim O'Donnell

4:57 p.m.

The Senate floor is a tight ship, with lawmakers blocked from bringing food, electronics, and just about every drink with them when they enter it. Yet one 60-year-old precedent provides a loophole to those strict rules — and a senator has finally used it to liven up President Trump's impeachment trial.

Sen. Tom Cotton (R-Ark.) was the first senator spotted asking for and receiving a glass of milk during the trial, in accordance with a longstanding allowance of dairy in the Senate, CBS News' Grace Segers noted Wednesday. He then got a second glass of milk, CBS News' Julia Boccagno noted, and paired it with a piece of Hershey's chocolate from the Senate's candy desk — seemingly a violation of floor rules.

Sen. Richard Burr (R-N.C. ) also reportedly acquired a glass of milk, Segers noted later. And in a twist, Segers tweeted that she'd heard Sen. Ted Cruz (R-Texas) actually had some milk the night before.

It's surprising that Sen. Rick Scott (R-Fla.) hasn't engaged in the trend yet, seeing as he was the one who reminded us of the dairy procedure on Tuesday. Kathryn Krawczyk

4:30 p.m.

Former Vice President Joe Biden seemingly doesn't want to hear about his apparent feud with Sen. Bernie Sanders (I-Vt.).

After an Iowa campaign event on Wednesday, Biden walked off the stage in a pretty typical way: followed by reporters asking him questions. But one from CBS News' Ed O'Keefe about Sanders seemingly sent him over the edge.

As Biden left the stage, O'Keefe asked why he was attacking Sanders after just accepting his apology a day earlier. "Why wasn't his apology enough, Mr. Vice President?" O'Keefe asked. Biden stopped, turned around, and peppered O'Keefe with a barrage of "why why why why why." "You're getting nervous, man! Calm down," Biden then said before briefly answering the question.

O'Keefe's question stems from one of Sanders' supporters accusing Biden of having a "corruption problem" in an op-ed, and another putting together a video purportedly showing Biden opposing social security. Sanders apologized for the op-ed but not for the video, as Biden pointed out to CBS News. Kathryn Krawczyk

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