LOS ANGELES (AP) — Adam Mosseri, the head of Meta's Instagram, testified Wednesday during a landmark social media trial in Los Angeles that he disagrees with the idea that people can be clinically addicted to social media platforms. The question of addiction is a key pillar of the case, where plaintiffs seek to hold social media companies responsible for harms to children who use their platforms. Meta Platforms and Google's YouTube are the two remaining defendants in the case, which TikTok a...