Federal Reserve Chairman Jerome Powell said the opioid crisis has had a “quite substantial” impact on the U.S. economy. Powell said on Wednesday that it has affected labor-force participation, which has held at about 63% for the past five years. (CNBC)

GlaxoSmithKline has hired Kim Branson to oversee its artificial intelligence team. Branson previously worked at Roche’s Genentech unit in San Francisco. The hire is part of GSK’s goal of overhauling its research and development operations. (Bloomberg)

A new California law will allow low-income adults age 25 and younger to be eligible for Medicaid even if they are not legal residents. Governor Gavin Newsom signed the bill on Tuesday, making California the first state to offer health benefits to individuals regardless of immigration status. The law is expected to cost taxpayers $98 million. (NBC News)

Amazon is partnering with the U.K.’s National Health Service to provide health information to Alexa users. The voice assistance technology will pull information from the NHS website when users ask health-related questions. (CNBC)

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