(Bloomberg) — After months of anticipation, a weather-changing La Niña has developed in the equatorial Pacific further adding to drought worries in California and the southern US, as well as the croplands in South America, the US Climate Prediction Center said.Most Read from BloombergNYC Condo Owners May Bear Costs of Landmark Green Building LawNYC’s Subway Violence Deters Drive to Bring Workers Back to OfficeDutch Central Bank Restores Amsterdam’s ‘Ugliest Building’Can American Drivers Learn tRead More