$3 billion.

Virgin CEO Richard Branson’s pledge to fight climate change. At the Clinton Global Initiative, Branson announced he was investing “100 percent of all future proceeds to the Virgin Group from our transportation interest, both our trains and airline businesses, into tackling global warming.” The donation exceeds the total amount of commitments from last year’s conference ($2.5 billion).

UPDATE: NYT reports:

Mr. Branson said the idea had grown out of a visit to his London home a few months ago by former Vice President Al Gore, who is on a prolonged worldwide speaking tour to promote “An Inconvenient Truth,” his documentary and book about global warming.

“You are in a position maybe to make a difference,” Mr. Branson said Mr. Gore had told him. “If you can make a giant step forward other people will follow.”