New Delhi, Feb. 11 -- The world's biggest social media companies face several landmark trials this year that seek to hold them responsible for harms to children who use their platforms. Opening statements in one such trial in Los Angeles County Superior Court began on Monday.

Instagram's parent company Meta and Google's YouTube face claims that their platforms deliberately addict and harm children. TikTok and Snap, which were originally named in the lawsuit, settled for undisclosed sums.

Jurors got their first glimpse into what will be a lengthy trial characterized by dueling narratives from the plaintiffs and the two remaining social media companies named as defendants.

Meta lawyer Paul Schmidt spoke of the disagreement within the sci...