Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Dr. JeFreda R. Brown is a financial consultant, Certified Financial Education Instructor, and researcher who has assisted thousands of clients over a more than two-decade career. She is the CEO of ...

Vitamin A is a fat-soluble vitamin that plays an essential role in maintaining vision, body growth, immune function, and reproductive health. The recommended dietary allowance (RDA) is 900 micrograms ...

A Martínez is one of the hosts of Morning Edition and Up First. He came to NPR in 2021 and is based out of NPR West. Before he joined KPCC, Martínez had never listened to public radio. He views his ...

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Walking speed reflects overall health, with faster ...