Nineteen nations pledged to double their research and development budget for clean energy technology, while a coalition of the world’s richest people will help fund companies to bring that technology to the masses.

Start-up activity looks like it has started up again. America isn’t experiencing a Golden Age of startups. Labor Department figures showed there were 679,000 US establishments that were less than a year old as of the first quarter, up from 652,000 a year earlier and the most since 2007. Excluding construction, which saw a run of startups during the bubble and is still in a funk, the US is seeing the most new establishments on record.

For the first time since the 1940s, more Mexicans have been leaving the U.S. to return home than arriving, a reversal that brings down the curtain on the largest immigration wave in modern American history, according to the Pew Research Center.

Much more is highlighted in A Look Around the Nation and the World.