As platforms tighten support through chatbot-led systems to curb costs and misuse, customers say resolving complaints has become slower, more rigid, and harder to escalate.

"She was 17, and she died in the ER a few hours after my shift. It's been five years, and when I think about it, I start ...

Taking Tanzania as an example, this paper systematically analyzes the current situation and challenges of primary school science education in Africa through questionnaires and interviews. The study ...