In a reversal of fortunes, after many brands shifted advertising dollars to digital media, the tide appears to be shifting in favor of traditional media and, specifically, AM/FM radio. Nielsen Audio's latest reporting shows that more American adults 18-plus listen to radio on a weekly basis than use TV or smartphones. It's that broad reach, coupled with the ability to deliver rich data and transparency, that's inspiring some brands to reinvest in radio, according to Nielsen Audio's Managing Director Brad Kelly (pictured). In a recent interview, Kelly explained the resurgence with advertisers, who are having, he noted, a "light bulb moment" with radio. He also discussed how broadcasters are embracing digital audio, including podcasting and new delivery platforms, to expand their audience.