Warren Buffett was featured in a marathon live appearance on CNBC's "Squawk Box" on Monday. This is an unofficial transcript of all three hours.» Read More
The long-delayed leg from Alberta, Canada, to Nebraska should be approved, the billionaire investor told CNBC.
"I would vote 'yes,'" Buffett said in a "Squawk Box" interview, but added he has "no idea" if President Barack Obama will approve it.
"I don't believe in the Keystone pipeline because of the jobs you'd make building it. You can build anything and create jobs," he said. "I just believe it's a useful pipeline."
(Read more: No climate change impact on insurance biz: Buffett)
The effects of climate change, "if any," have not affected the insurance market, billionaire Warren Buffett told CNBC on Monday—adding he's not calculating the probabilities of catastrophes any differently.
While the question of climate change "deserves lots of attention," Buffett said in a "Squawk Box" interview, "It has no effect ... [on] the prices we're charging this year versus five years ago. And I don't think it'll have an effect on what we're charging three years or five years from now." He added, "That may change ten years from now."
(Read more: I'd vote 'yes' on Keystone pipeline: Warren Buffett)
He said the U.S. has been "remarkably free of hurricanes" in the past five years with only slightly more tornadoes.
That's an increase in net worth of $34.2 billion after deducting $1.8 billion of what he calls "economically meaningless" charges from Berkshire's purchase of minority interests in Marmon and Iscar.
That strong gain, however, was dwarfed by the S&P's 32.4 percent advance, including dividends.
Warren Buffett is famous for his stock-picking ability, but he also puts a substantial amount of Berkshire Hathaway's money in bonds.
Those transactions don't get a lot of attention. Unlike the contents of its stock portfolio that must be filed with the SEC four times a year, Berkshire doesn't have to publicly disclose its debt holdings.
In his letter to shareholders released Saturday, however, Buffett admitted to a money-losing bond buy involving Energy Future Holdings.
(Read more: Buffett's Berkshire slammed by S&P in 2013)
Everyone knows Warren Buffett, but three other people who have been making major decisions at Berkshire Hathaway have kept a low profile.
Todd Combs and Ted Weschler manage chunks of Berkshire's stock portfolio and Tracy Britt Cool is Buffett's "financial assistant."
Since being hired in the past four years, the trio, referred to by Buffett as the "Three Ts," have made virtually no public appearances.
Warren Buffett is offering some basic instinct advice about investing.
Warren Buffett's Berkshire Hathaway purchased 1.13 million more shares of DaVita HealthCare Partners this week, raising its stake in the kidney dialysis company to 17.7 percent.
The purchases bring Berkshire's total stake in the company to 37.62 million shares. At Wednesday's close of $67.50, the stock had a market value of $2.54 billion.
Warren Buffett says if you want to learn how to make money from the stock market you should look at how he made some money with two small real estate investments.
In an excerpt published by Fortune, from his upcoming annual letter to Berkshire Hathaway shareholders, Buffett writes about his purchase of a Nebraska farm and his investment in a retail property near New York University in Manhattan.
In both cases, he bought when prices were unusually low after bubbles had burst.
In both cases he had no particular expertise.
(Read more: Berkshire Hathaway's 15 biggest stock holdings)
And most importantly, in both cases he invested because he thought the assets would be increasingly profitable, not because he expected to sell at a higher price.
After consulting with Chairman and CEO Warren Buffett, Berkshire Hathaway subsidiary Business Wire has decided to cut off the high-frequency trading firms that were paying big money to get news releases and economic reports through direct feeds from the company.
Business Wire has been under pressure from New York regulators since The Wall Street Journal reported earlier this month that the direct access gave the HFT firms "the ability to trade fractions of a second ahead of less fleet-footed investors."
The moves are all relatively small, however, especially by Berkshire standards.
The Dish shares were worth about $31 million at the current price, and the Glaxo stake totaled only $19.3 million, indicating that they were handled by one of Berkshire's portfolio managers rather than by Buffett himself.