Duolingo CEO Luis von Ahn says his Guatemalan roots and concerns about educational inequity inspired him to start the free language learning app four years ago

Audrey Geisel embraced the mission to protect the Dr. Seuss brand after her husband died and worked to expand his legacy

Critics say the Trump administration should reconsider ending a stricter safety rule for trains that haul explosive fuels after The Associated Press found the government miscalculated the potential benefits

California Gov. Jerry Brown says Democrats are likely to spend too much and the party's dominance will make it tough for his successor to control it

California is moving to eliminate fossil fuels from its fleet of 14,000 transit buses, enacting a first-in-the-nation mandate that will vastly increase the number of electric buses on the road

Regulators are accusing one of California's largest utilities of falsifying safety documents on natural gas pipelines

A tech billionaire whose wedding violated California rules has helped create a smartphone app that shows users a map of more than 1,500 spots where people can get to the coastline

Arizona newspaper publisher and his estranged wife are locked in a bizarre divorce case that includes poisoning allegations

Negative online reviews are probably inevitable at many businesses, especially those catering to consumers

Christmas tree farmers worry they are slowly losing ground to the artificial tree, so they're taking to social media this holiday season to convince Americans to go natural