As World Cup fever grips Brazil, scrutiny mounts over its sports betting industry

RIO DE JANEIRO — When World Cup season descends upon soccer-mad Brazil, green and yellow banners decorate restaurants, bars and apartment buildings, streets are painted with flags and soccer balls, and discussions of the beloved national team's games are ubiquitous. But this year, another topic has taken center stage: the prevalence of ads for bets on the games, even as the country grapples with a surge in gambling which leaves some with crippling debt and has led to the number of people s